题目内容
You can’t imagine what difficulty we had________home in the snowstorm.
| A．walked | B．walking | C．to walk | D．walk |
B
解析试题分析：通过分析句子的结构，可知what difficulty we had________home in the snowstorm在句中作imagine的宾语，所以是本句是一个宾语从句；而在从句中what difficulty又是have的宾语，所以本句的结构是have some difficulties doing sth.所以本题选B。
考点：本题考查动名词。
点评：本句的关键在于分析句子的结构，首先应该弄清本句是宾语从句，其次应该掌握短语have some difficulties/problems/troubles (in) doing sth.“在做某事上有困难”。
天天向上口算本系列答案— You can’t imagine ________ great fun playing computer games is.
— Really? But it may cause you a lot of trouble.
|
A．what a |
B．how |
C．what |
D．how a |
No family wants its home to catch fire, but it's good to plan for a fire just in case （以防万一）. Talk with your family about 36 to do if a fire starts. 37 should have a plan for getting out of the house. Be sure to choose a safe place to 38 after everyone gets away from the fire.
What should you do 39 there is a fire? First, 40 people know about the fire. Yell （叫喊） the word "fire". Knock on the walls with your hands.
Then 41 the door of your room. If the door is warm, don't open it. If it's cool, open it just enough to 42 . If you see fire or much smoke, close the door fast.
If you can't see fire or smoke, you can go out of the door. Shut the 43 behind you. That will slow down the fire. Now find a 44 out. Stay away from the smoke. The air is the 45 near the floor. So it 46 be the safest to crawl（爬）when you leave the house.
If you can't leave your room, close your door. Cover the crack （缝隙） under the door
47 clothing. Then open the window or 48 the glass with a chair. Crawl out, of the window 49 .If the window is high off the ground, 50 jump! Wave a towel out of the window, and yell for help. When you get out of the house, run to the place where you and your family chose to meet.
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