上述哪种疾病可出现呼吸功能衰竭（） A.格林--巴利病 B.周期性瘫痪 C.多发性神

给下面的句子加上合适的标点。

1．鹿惊奇地说（　）咦（　）这是我吗（　）

2．（　）多美的陶罐（　）一个人说（　）小心点儿（　）千万别把它碰坏了（　）

3．（　）这里面一定有原因（　）科利亚说（　）

阅读短文，选词填空，每空一词，每词只能使用一次。

Hua Lin, a Chinese boy of 13 years old,likes eating snacks very much. His 小题1:__snack is cream biscuits （奶油饼干）. Sometimes he can eat three packs (包)a day.” I like eating them and I do not want to have anything 小题2:___.” he said.

Now in China there are many children like Hua Lin. They also enjoy snacks. It’s a小题3:__problem. Because they can’t get小题4:___nutrition（营养） from these things, and if they don’t try to eat more小题5:_food, they may become overweight.（肥胖的）

So parents,teachers and schools are worried 小题6:___them. Health experts （营养专家）tell students that they should have healthy eating 小题7:___. First, they must eat regular（规律的） meals instead of too many snacks, and have a good breakfast. Then they should have many different kinds of food,such 小题8:___vegetables,eggs and milk. They can give you what your bodies need. Some students also like fast food, like McDonalds or KFC. They think they are delicious, but 小题9:__too much is also unhealthy. Third, they can’t drink too many sugar（糖）drinks or eat too much fried food.

If they can do as the experts say, they will be healthier. They won’t be 小题10:___at school. They will have enough energy.

关于季风水田农业的叙述不正确的是（   ）

A 生产规模小，机械化水平低  B 水利工程量大

C 需要投入大量的劳动力      D 仅能在热带、亚热带地区分布

一种测定风作用力的仪器原理如图所示，它的细长金属丝一端固定于悬点O，另一端悬挂着一个质量为m金属球。无风时，金属丝自然下垂，当受到沿水平方向吹来的风时，金属丝将偏离竖直方向一定角度θ，风力越大，偏角越大。下列关于风力F与偏角θ小球质量m之间的关系式正确的是

A．F = mgsinθ

B．F = mgcosθ

C．F = mgtanθ

D．F = mgcotθ

决策活动