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【单选题】
— How long does it take to get there? —_______________A.
20 kilometers
B.
3 miles
C.
About a quarter
D.
20 minutes’ walk
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】有关胸内压的叙述，正确的是
A.
是指胸膜腔内气体所产生的压力
B.
平静呼气时胸内压等于大气压
C.
用力吸气时胸内压是正压
D.
气胸时胸内压负压增大
E.
胸内压的大小由肺回缩力决定
【判断题】从oriλ开始的噬菌体复制的起始是被两个噬菌体蛋白O和P所控制功,在大肠杆菌E.coli中O和P是DnaA和DnaC蛋白的类似物。基于这种比较,O蛋白代表一个解旋酶而P蛋白调节解旋酶和引发酶结合。
A.
正确
B.
错误
【单选题】What did Mr Darcy do when he knew Jane was in town?
A.
He told Mr Bingley about it, and he thought it was best for him.
B.
He did not tell Mr Bingley about it, because he thought it was best for Jane.
C.
He did not tell Mr Bingley about it, and he was not regretful for what he had done.
D.
He did not tell Mr Bingley about it, but he regreted doing so.
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