37岁，已婚，既往月经规律，自述无明显原因突然闭经2个月。妇科检查，以下哪项支持妊娠

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       Do you know how to be a healthy kidll Here are some rules you should follow.

       First, eat different food, especially fruit and vegetables. You may have a favorite, but you'd better

eat something different. If you eat different food, you'Il probably get more nutrients your body needs.

      Second, drink water and milk as often as possible. When you're really thirsty, cold water is the

No. 1 choice.  Milk is a great drink  that can give you more calcium(钙)that your body needs to grow

strong bones.

      Third, listen to your body. How do you feel when you are full? When you are eating, notice how

your body feels and when your stom- ach feels comfortably full. Eating too much will not make you

feel comfortable and will make you fat.

      Fourth, limit screen time. Screen time is the time you watch TV, DVDs and videos, or using

computers. It is good to take more exercise such as basketball, bike riding and swimming. You can't

watch TV for more than two hours a day.

      Fifth, be active. One thing you'd like to do, as a kid,js tofind out which activity you like best. Find

ways to be active every day. Follow these rules and you can be a healthy kid.

1. You should eat different food especially____     .

A. meat                  

B. hamburgers

C. sweets                  

D. fruit and vegetables

2. Which kind of drinks can give you more calcium?

A. Juice.                  

B. Milk.

C. Cold water.            

D. Tea.

3. According to the passage, you should follow_______rules if you want to be healthy.

A. five    

B. nine  

C. fifteen    

D. thirt.een

4. You should watch TV____      a day.

A. more than two hour        

B. less than two hours

C. more than three ho        

D. five hours

5. According to the passage, which of the following isTRUE?

A. When you're eating, you don't have to notice how your body feels.

B. You can eat your favorite food as much as possible.

C. You can watch TV as long as you like to get more information.

D. We should try to live in an active way in our life.

声音“震耳欲聋”是指它的[ ]

A．响度很大            

B．传播速度大

C．频率很高            

D．振动时间长

实验室钾、钠活泼金属因剧烈反应而引起的失火只能用砂土覆盖灭火。

香槟酒是一种含气体的葡萄酒，酒精含量不高，呈淡琥珀色，气味清香，酒气充足。

电源在单位时间内所作的功称为（），电功率的单位为（），又称为（）。