下面哪一个软件不属于多媒体课件制作工具软件？（）A、Auhorware B、Flas

用所给词的适当形式填空。

1. At that moment I saw a dog _______(lie) on the floor.

2. At the beginning of the _______(twenty) century,the world's population was 1.7 billion.

3. The _______(shelf) in his study are full of science books.

4. Of all the lessons in Book Three, Lesson Five is the _______(little) interesting.

5. The dog's _______(die) made her very sad.

6. There _______(be) many changes over the years.

7. Who teaches _______(they) physics?

8. How _______(excited) it is to go roller skating here.

9. Most of the students work hard _______(get) high marks in exams.

10. We can live _______(comfortable) in Taizhou because it's a good place.

墨子和他的弟子们曾做过世界上最早的（）实验，并且提出了精辟的解释。

如果精馏塔仅处于停车而人不需要进入塔内，必须在停车期间用（）保护。

A.蒸汽

B.氮气

C.少量空气

D.氧气

下列除哪项外，均为心血不足型心悸的主症（）

A.善惊易恐

B.心悸头晕

C.面色不华

D.倦怠无力

E.舌质淡红，脉象细弱

右图为细胞周期示意图，请据图回答

E、F、G、H的划分有明显的时期界限吗（）