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【判断题】
长江是我国第一大河，其干流流经我国10个省区市。()A.
正确
B.
错误
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皮皮学刷刷变学霸
举一反三
【单选题】- My friend has achieved his goal after years of hard work. - Great! ________.
A.
One tree can't make a forest
B.
Where there is a will, there is a way
C.
Many hands make light work
D.
A friend in need is a friend indeed
【简答题】B. Listen to a talk about sleep. Take notes and complete the following summary. Everyone needs to 1 . It seems that there are 2 purposes of sleep: 3 rest and 4 or 5 rest. We need to rest our 6 and ou...
【单选题】I don’t want ______ like I’m speaking ill of my friend, but he always does not perform what he says.
A.
to sound
B.
to be sounded
C.
sounding
D.
to have sounded
【单选题】下列叙述正确的是
A.
同温同压下，相同体积的气体，其分子数一定相等，原子数也一定相等
B.
任何条件下，等物质的量的甲烷(CH 4 )和一氧化碳所含的原子数一定相等
C.
同温同压下的二氧化碳气体和氮气，若体积相等，则质量一定相等
D.
同温同压下，1L一氧化碳气体一定比1L氧气的质量小
【单选题】—Do you __________ an American friend? —No, I don’t. But my sister __________ one.
A.
has, has
B.
has, have
C.
have, have
D.
have, has
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