读图5，完成下列各题。（12分） （1）标注：请在图中中心位置处标注相应的极点

根据汉语提示和句意填入恰当的单词。

1. Four _____ (nine) of the trees have been watered so far.

2. The little dog waited _____ (hope) beside the table for some food.

3. Have you heard of the early _____ (settle) problems on Mars?

4. He says he stayed up late last night and now he's feeling much _____ (sleep).

5. The farmers suffered a heavy _____ (lose) as a result of the 5.12 earthquake.

6. The shiny diamond ring is _____ (专门) made for your girlfriend, Tom.

7. The virus _____ (扩散) so quickly that it drew the government's attention.

8. Some cold-blooded animals can sleep _____ (贯穿) the winter.

9. Evidence has now _____ (证实) that there are only eight planets in the solar system.

10. When the man saw that girl for the first time, her beauty took his _____ (呼吸) away.

X、Y、Z、W为四种短周期主族元素，原子序数依次增大。其中X、Z同主族，Y、Z同周期， Y原子的最外层电子数是次外层电子数的一半，X原子最外层电子数是核外电子层数的3倍，W的最高正价与最低负价代数和为6。下列说法正确的是

A．四种元素非金属性由强到弱的顺序是：W＞X＞Y＞Z

B．原子半径由小到大的顺序为：X< W < Z < Y

C．Y、Z、W三种元素气态氢化物中，Z的气态氢化物最稳定

D．Y和Z的氧化物都属于酸性氧化物，它们都能与水反应生成相应的酸

有关牙周袋的概念错误的是（）

A.牙周袋是病理性加深的龈沟

B.牙周袋包括假性牙周袋和真性牙周袋

C.真性牙周袋是指≥6mm的牙周袋

D.假性牙周袋是因牙龈肿胀或增生所致

E.临床上的牙周袋包含龈缘向冠方迁移和沟底向根方延伸两种情况

真菌的侵入途径一般是（）。

A、直接侵入

B、自然孔口侵入

C、虫媒传播

D、伤口侵入

在混合机内安装扬料板是为了（）。