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【单选题】
党的以来 ,我国科技整体水平从量的增长向质的提升加速转变,步入以跟跑为主向跟跑和并跑、领跑并存的新阶段,重点科技前沿取得了一批具有全球影响力的原创成果.目前,我国在建和投入运行的重大科技基础设施总量已接近50 个,总体水平基本进入国际先进行列,基础设施为载人航天、探月工程、大型客机研制等国家重大科技任务提供支撑.这表明 ( )
A.
我国已成为世界强国
B.
我国不需要科技创新
C.
我国科技总体水平与发达国家相比有很大差距
D.
我国在一些重要领域已走在世界的前列
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【单选题】Obtaining Drinking Water from Air Humidity Not a plant to be seen，the desert ground is too dry．But the air contains water，and research scientists have found a (51) of obtaining drinking water from a...
A.
who
B.
where
C.
when
D.
which
【单选题】Section BDirections: There are 2 passages in this section．Each passage is followed by some questions or unfinished statements．For each of them there are four choices marked A, B, C and D．You should de...
A.
they can afford the cure for malaria
B.
they can save their cash efficiently
C.
they can live safely in the village
D.
their can get rid of poverty soon
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【单选题】Obtaining Drinking Water from Air Humidity Not a plant to be seen，the desert ground is too dry．But the air contains water，and research scientists have found a (51) of obtaining drinking water from a...
A.
who
B.
where
C.
when
D.
which
【单选题】Section BDirections: There are 2 passages in this section．Each passage is followed by some questions or unfinished statements．For each of them there are four choices marked A, B, C and D．You should de...
A.
they can afford the cure for malaria
B.
they can save their cash efficiently
C.
they can live safely in the village
D.
their can get rid of poverty soon
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