问题 问答题 简答题

皮肤被刀片划破后,在伤口上涂一种什么铁盐可以止血?

答案

参考答案:

用FeCl3的50—60%的水溶液。

阅读理解

阅读理解.

     The United States has many different kinds of climates (气候). On the northwest coast (海岸), the

temperature changes very little between summer and winter, but the north central (中部的) states have

a very different kind of climate. In those states, people wear light clothes in summer, and they need

heavy woolen clothes in winter.

     In the southwest coast, the climate is rainy and warm during the winter, but the summer is dry and hot.

     In the northeast of the United States, summer temperatures are very different from winter temperatures.

Summer is usually hot, and winter is usually cold. Spring temperatures are warm, and fall temperatures

are cool.

     Years ago, people in the cold parts of the United States didn't often get fresh (新鲜的) vegetables

and fresh fruits during the summer. Today, however (然而), trucks and trains carry fruits and vegetables

very quickly to all parts of the United States. In this way, Americans "send their climates" to people in

other states.

1. The summer and winter temperatures are almost the same _____. 

    A. in the northeastern states

    B. on the north central states

    C. in the western states

    D. on the northwest coast

2. The word "fall" in this passage means _____.

    A. drop

    B. down

    C. autumn

    D. spring

3. Today people _____ can get fresh vegetables and fruits.

    A. in the north central states

    B. in every part of the U.S.A.

    C. in the cold parts of the U.S.A.

    D. in the southwest part of the U.S.A.

4. From this passage we know that the climate of the United States _____.

    A. is always very cold 

    B. is warm in winter

    C. is widely different

    D. changes very little between summer and winter

5. From Paragraph 2 we know that the climate of the southwest coast is _____.

    A. Maritime (海洋性) climate

    B. Savanna (热带草原) climate

    C. Mediterranean (地中海) climate

    D. Tropical rainforest (热带雨林) climate

多项选择题