（3分）如图所示，A、B是氢气吹出的肥皂泡，在空气中慢慢上升。用火柴从下方点燃A

To learn English well, we should find  opportunities to hear English ____ much as we can.    [ ]

A. speak          

B. speaking    

C. spoken      

D. to speak

根据对话情景，填入恰当的单词。

A: Hi, Daniel. I plan to take a vacation in Taiwan.

B: Really? I hear that Taiwan is a good place to go __1__. It's famous for Mount Ali and Riyuetan Pool.

A: Yes. Many tourists take trips there every year.

B: What's the __2__ like there?

A: It's not cold in winter and not too hot in summer. In fact, it's nearly the __3__ as that in Xiamen.

B: __4__ are you going there?

A: By __5__. I don't want to miss (错过) the beautiful view of the sea.

B: Oh, that __6__ interesting and exciting. Have a good trip!

A: Thank you.

全口义齿排牙时，上下中切牙近中邻面的标志是（）

A.面部中线

B.口角线

C.磨牙后垫前缘线

D.唇高线与唇低线

E.切牙乳突点前后1mm

汽轮机防进水保护的主要目的是防止汽轮机进水以免造成水蚀现象。

农村劳动要素的市场化改革措施有什么？