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【判断题】
目前发现的修饰核苷酸大多存在于tRNA分子中。A.
正确
B.
错误
拍照语音搜题，微信中搜索"皮皮学"使用
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参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【简答题】I didn’t expect to meet him. I met him quite by a_______.
【单选题】I don’t know if I him this evening. If I him, I will give the novel to him.
A.
will meet, will meet
B.
will meet, meet
C.
meet, will meet
D.
meet, meet
【单选题】在加注制冷剂前,应补充冷冻机油,建议的补充量为 。
A.
制冷剂净化时的排出量+20ml
B.
制冷剂净化时的排出量。
C.
制冷剂净化时的排出量+40ml
D.
制冷剂净化时的排出量+50ml
【单选题】--- I paid him 300 yuan for the sneakers． --- Oh, he charged you too much．You _____ them with half the money．
A.
could have bought
B.
needn’t have bought
C.
must have bought
D.
wouldn’t have bought
【单选题】—I paid him 200 yuan for the sneakers. —Oh, he charged you too much. You _________ them with half the money.
A.
could have bought
B.
needn’t have bought
C.
must have bought
D.
wouldn’t have bought
【单选题】Another 1000 yuan has been to him and by now he has owed 5000 yuan me. [ ]
A.
charged;to
B.
charging to;to
C.
charged for;with
D.
charged to;for
【简答题】It's true that I encouraged him，but I didn't actually help him．
【单选题】关于乳牙龋蚀的好发牙面，下列哪项是错误的
A.
上颌乳牙中切牙的远中面，其次是近中面和唇面
B.
上颌乳侧切牙以唇面，近中面多见
C.
第一乳磨牙多见于牙合面，其次是远中面
D.
下颌乳尖牙早早见于唇面，其次是远中面和近中面
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