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【单选题】

Judging from the passage, people have more chances to survive fires in aircraft if they ()

A. fasten their seat belt tightly
B. read airline safety statistics before takeoff
C. keep their feet flat on the floor
D. keep their heads low

A.
According to airline industry statistics, almost 90% of airline accidents are not survivable or partially survivable. But passengers can increase their chances of survival by learning and following certain tips. Experts say that you should read and listen to safety instructions before takeoff and ask questions if you have uncertainties. You should fasten your seat belt low on your hips and as possible. Of course, you should also know how the release mechanism of your belt operates. During takeoffs and landings you are advised to keep your feet fiat on the floor. Before takeoff you should locate the nearest exit and an alternative exit and count the rows of seats between you and the exits so that you can find them in the dark if necessary.
B.
In the that you are forewarned of a possible accident, you should put your hands on your ankles and keep your head down until the plane comes to a complete stop. If smoke is present in the cabin, you should keep your head low and cover your face with napkins, towels, or clothing. If possible, wet these for added protection against smoke inhalation. To evacuate as quickly as possible, follow crew commands and do not take personal belongings with you. Do not jump on escape slides before they are fully inflated, and when you jump, do so with your arms and legs extended in front of you. When you get to the ground, you should move away from the plane as quickly as possible, and never smoke near the wreckage.
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参考答案:
举一反三

【单选题】下列关于噻嗪类利尿药的降压机制,说法不正确的是

A.
通过利尿作用,减少血容量而产生降压作用
B.
平滑肌细胞内的Na+浓度降低,通过Na+-Ca2+交换,使细胞内的Ca2+浓度也降低
C.
使血管平滑肌对缩血管物质反应减弱
D.
通过利尿作用,使细胞外液容量减少而降压
E.
通过减少醛固酮的分泌发挥利尿降压作用

【单选题】延长局麻药作用时间的常用方法有( )。

A.
注射麻黄碱
B.
增加药物浓度
C.
增加药物溶液用量
D.
加入少量的肾上腺素
E.
调节药物溶液pH至微碱性

【单选题】如下不等式成立的是()。

A.
在(-3,0)区间上,ln3-x<ln(3+x)
B.
在(-3,0)区间上,ln3-x>ln(3+x)
C.
在[0,+∞)区间上,ln3-x>ln(3+x)
D.
在[0,+∞)区间上,ln3-x<ln(3+x)

【单选题】49() A.pleasant B.unfair C.delighted D.nice

A.
Sometimes, people (41) your life and you realize that they are there (42) some purpose, to (43) you a lesson, or to help you (44) who you are or who you want to become. You’d never know who these people (45) be, your friend, your classmate, your neighbor, your co-worker, your teacher, or (46) a stranger, but they will deeply (47) your life in some way.
B.
And sometimes things (48) to you that may seem (49) , painful and horrible at first, but (50) , you realize that without (51) those difficulties you would never know your strength, (52) or potential. Everything happens for a (53) . Nothing happens by (54) or by means of good luck. Illness, great achievement, love, injury and failure all come to (55) the limits of your soul. Without these tests, life would be like a straight and fiat road, but it goes (56) . It would be safe and comfortable, but dull and completely (57) .
C.
Those people who affect your life, and the failure and the success you experience can help you to create who you are and who you become. Even the bad experiences can (58) from. In fact, they are the most important ones. If someone breaks your heart, or hurts you, please (59) them, for they helped you to learn about the importance of being careful when you open your heart. If someone loves you, love them (60) , because they are teaching you to love and how to open your heart and eyes to things.

【单选题】43() A.teach B.deliver C.give D.learn

A.
Sometimes, people (41) your life and you realize that they are there (42) some purpose, to (43) you a lesson, or to help you (44) who you are or who you want to become. You’d never know who these people (45) be, your friend, your classmate, your neighbor, your co-worker, your teacher, or (46) a stranger, but they will deeply (47) your life in some way.
B.
And sometimes things (48) to you that may seem (49) , painful and horrible at first, but (50) , you realize that without (51) those difficulties you would never know your strength, (52) or potential. Everything happens for a (53) . Nothing happens by (54) or by means of good luck. Illness, great achievement, love, injury and failure all come to (55) the limits of your soul. Without these tests, life would be like a straight and fiat road, but it goes (56) . It would be safe and comfortable, but dull and completely (57) .
C.
Those people who affect your life, and the failure and the success you experience can help you to create who you are and who you become. Even the bad experiences can (58) from. In fact, they are the most important ones. If someone breaks your heart, or hurts you, please (59) them, for they helped you to learn about the importance of being careful when you open your heart. If someone loves you, love them (60) , because they are teaching you to love and how to open your heart and eyes to things.
相关题目:
【单选题】下列关于噻嗪类利尿药的降压机制,说法不正确的是
A.
通过利尿作用,减少血容量而产生降压作用
B.
平滑肌细胞内的Na+浓度降低,通过Na+-Ca2+交换,使细胞内的Ca2+浓度也降低
C.
使血管平滑肌对缩血管物质反应减弱
D.
通过利尿作用,使细胞外液容量减少而降压
E.
通过减少醛固酮的分泌发挥利尿降压作用
【单选题】延长局麻药作用时间的常用方法有( )。
A.
注射麻黄碱
B.
增加药物浓度
C.
增加药物溶液用量
D.
加入少量的肾上腺素
E.
调节药物溶液pH至微碱性
【单选题】如下不等式成立的是()。
A.
在(-3,0)区间上,ln3-x<ln(3+x)
B.
在(-3,0)区间上,ln3-x>ln(3+x)
C.
在[0,+∞)区间上,ln3-x>ln(3+x)
D.
在[0,+∞)区间上,ln3-x<ln(3+x)
【单选题】49() A.pleasant B.unfair C.delighted D.nice
A.
Sometimes, people (41) your life and you realize that they are there (42) some purpose, to (43) you a lesson, or to help you (44) who you are or who you want to become. You’d never know who these people (45) be, your friend, your classmate, your neighbor, your co-worker, your teacher, or (46) a stranger, but they will deeply (47) your life in some way.
B.
And sometimes things (48) to you that may seem (49) , painful and horrible at first, but (50) , you realize that without (51) those difficulties you would never know your strength, (52) or potential. Everything happens for a (53) . Nothing happens by (54) or by means of good luck. Illness, great achievement, love, injury and failure all come to (55) the limits of your soul. Without these tests, life would be like a straight and fiat road, but it goes (56) . It would be safe and comfortable, but dull and completely (57) .
C.
Those people who affect your life, and the failure and the success you experience can help you to create who you are and who you become. Even the bad experiences can (58) from. In fact, they are the most important ones. If someone breaks your heart, or hurts you, please (59) them, for they helped you to learn about the importance of being careful when you open your heart. If someone loves you, love them (60) , because they are teaching you to love and how to open your heart and eyes to things.
【单选题】43() A.teach B.deliver C.give D.learn
A.
Sometimes, people (41) your life and you realize that they are there (42) some purpose, to (43) you a lesson, or to help you (44) who you are or who you want to become. You’d never know who these people (45) be, your friend, your classmate, your neighbor, your co-worker, your teacher, or (46) a stranger, but they will deeply (47) your life in some way.
B.
And sometimes things (48) to you that may seem (49) , painful and horrible at first, but (50) , you realize that without (51) those difficulties you would never know your strength, (52) or potential. Everything happens for a (53) . Nothing happens by (54) or by means of good luck. Illness, great achievement, love, injury and failure all come to (55) the limits of your soul. Without these tests, life would be like a straight and fiat road, but it goes (56) . It would be safe and comfortable, but dull and completely (57) .
C.
Those people who affect your life, and the failure and the success you experience can help you to create who you are and who you become. Even the bad experiences can (58) from. In fact, they are the most important ones. If someone breaks your heart, or hurts you, please (59) them, for they helped you to learn about the importance of being careful when you open your heart. If someone loves you, love them (60) , because they are teaching you to love and how to open your heart and eyes to things.
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