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【多选题】
屏蔽门的主要有( )
A.
固定门
B.
滑动门
C.
应急门
D.
端门
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举一反三
【单选题】---How many elephants are there in the zoo? --- There aren’t _______.
A.
some
B.
any
C.
one
D.
much
【单选题】In many countries, there aren’t sufficient water resources ________ for future development.
A.
offered
B.
provided
C.
existent
D.
available
【单选题】There are many pears ______ the tree, but there aren't any birds ______ it. [     ]
A.
at; in
B.
to; on
C.
on; in
D.
in; with
【单选题】下列关于屈肘运动的描述错误的是(  )
A.
屈肘运动时,骨骼肌收缩,牵动骨绕着关节活动
B.
屈肘运动时,肱二头肌舒张,肱三头肌收缩
C.
屈肘运动受神经系统的支配
D.
屈肘运动需要消耗能量
【简答题】下列关于屈肘运动的描述错误的是 [ ] A. 屈肘运动时,骨骼肌收缩,牵动骨绕着关节活动 B. 屈肘运动时,肱二头肌舒张,肱三头肌收缩 C. 屈肘运动受神经系统的支配 D. 屈肘运动需要消耗能量
【单选题】There ____________ many children in the classroom. [     ]
A.
is
B.
are
C.
aren't
【多选题】如何挖掘农田土壤剖面及采集土壤农化样品?
A.
点数及布点:符合精度、均匀性、典型性、 代表性
B.
挖掘:不可在沟边、路边、房边、树边等;长1.5-2m、宽1m、深1.5m或地下水或母质,观察面朝阳,层土和下层土分放。
C.
农化土壤采集:一般采集农田混合土壤样品,采集3-5个0-20cm、20-40cm土样,按照四分法进行混合取样,写好标签,注明采样地点、时间、层次、采样人等。
D.
挖掘浇水水后土壤
【单选题】—There are many old houses in Beijing, aren’t there? —______ . It’s a city with long history. [     ]
A.
Yes, they are.
B.
Yes, there are.
C.
No, there aren’t.
【单选题】There orange juice in the bottle. [     ]
A.
aren't many
B.
aren't much
C.
isn't much
D.
isn't many
【单选题】There are ___________ boys. There aren't ___________ books. [     ]
A.
enough, too many
B.
too many, enough
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