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【单选题】
河床式电站的特点是[ ]。A.
坝高决定水头
B.
厂房高度取决于水头高低
C.
没有水库调节径流
D.
出力小
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反馈参考答案：
举一反三
【单选题】If it tomorrow, I will go shopping with you.
A.
isn’t raining
B.
rain
C.
doesn’t rain
D.
isn’t going to rain
【单选题】Education and awareness-raising of dual-use risks are biosecurity measures suggested to aid prevention. Among the measures needed to deal with an attack already produced, strategies to _______________...
A.
cover and publicize
B.
avoid and elude
C.
cover and avoid
D.
recognize and attribute
【判断题】Synthetic biology is a field in constant and rapid development, so discussions on biosafety and biosecurity should evolve as old data are obtained and potential risks are identified.
A.
正确
B.
错误
【单选题】下列有关细胞膜的叙述中,正确的是
A.
组成细胞膜的分子中只有磷脂分子是运动的
B.
能溶解脂质的溶剂和蛋白酶都会破坏细胞膜
C.
细胞膜上糖类均与蛋白质结合在一起
D.
不同功能的细胞膜上的蛋白质的种类和数量相同
【判断题】Synthetic biology is a field in constant and rapid development, so discussions on biosafety and biosecurity should evolve as new data are obtained and potential risks are identified.
A.
正确
B.
错误
【单选题】A challenge for biosecurity is the potential of synthetic biology to further complicate the identification of a disease outbreak, so that synthetic causative agents could be ______________________ wit...
A.
unforgettable
B.
unforgivable
C.
undetectable
D.
uneditable
【单选题】听力原文：M: Finally, the weekend is here. I will go for a picnic, so do you know tomorrow's weather? W: Now it is 7:32 and here is the weather forecast. Strong wind blew today. And tomorrow it will be col...
A.
It will be sunny.
B.
It will be very cold.
C.
It will be windy.
D.
It will be rainy.
【单选题】下列有关细胞膜的叙述,正确的是
A.
细胞膜两侧的离子浓度差是通过自由扩散实现的
B.
细胞膜与线粒体膜、核膜中所含蛋白质的功能相同
C.
分泌蛋白质分泌到细胞外的过程存在膜脂的流动现象
D.
膜中的磷 脂分子是由胆固醇、脂肪酸和磷酸组成的
【单选题】The measures that currently govern biosecurity issues are prior to synthetic biology. Given the risks posed by this discipline, these existing regulations must be revisited, updated and, if necessary,...
A.
shortened
B.
loosened
C.
tightened
D.
extended
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