— How much do you know about the 3D film

题型:选择题

问题:

— How much do you know about the 3D film technology?

— A little. Not until ________ the hot movie Avatar ________ some about it.

A.did I see; did I begin to learn

B.I saw; I began to learn

C.I saw; did I begin to learn

D.did I see; I began to learn

考点:全部倒装部分倒装省略句
题型:选择题

真菌

题型:选择题

关于环境问题,下列说法正确的是[ ]

A.PH>7的雨水称为酸雨

B.大理石雕不怕酸雨

C.煤燃烧应加入适当的物质,以减少废气中的二氧化硫

D.废弃电池中含有Hg、Pb元素不污染环境,可以不回收

题型:选择题

补全对话,每空一词。

1.—Is this your notebook?

   —Yes, ______.

2.—Is that his eraser?

   —No,______.

3.—Is that his ruler?

   —______, it is.

4.—Is this her book?

   —______, it isn't.

5.—Is this your backpack?

   —______, it's her backpack

题型:选择题

钢结构的连接方法有()。

A.铆接

B.绑扎焊接

C.焊接

D.高强度螺栓连接

E.普通螺栓连接

题型:选择题

求膨胀功的公式适用于()。

A.任意气体等温过程

B.任意气体绝热过程

C.理想气体等温过程

D.理想气体可逆绝热过程

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