【名词&注释】
叶绿体(chloroplast)、太阳黑子(sunspot)、直接影响(directly affect)、全球气候变化(global climate change)、线速度(linear velocity)
[填空题]气候变化与异常直接影响人类的生产和生活。引起全球气候变化与异常的原因不可能是
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学习资料:
[单选题]
A. right now
B. from now
C. at times
D. in time
[单选题]41_______
A. knew
B. saw
C. showed
D. made
[单选题]31_______
A. Though
B. For
C. Therefor
D. But
[单选题]How did the accident happen?
A. A lorry hit a car.
B. A car ran into a lorry.
C. A bank clerk rushed into the street.
[单选题]禾柄锈菌的冬孢子为双胞双核,夏孢子为单胞单核。( )
A. 正确
B. 错误
[单选题]凡是叶的表皮细胞都无叶绿体。( )
A. 正确
B. 错误
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