下列说法错误的是（） A.低温变脆现是压力容器经常遇到的现象。 B.并不是所有金
题型：单项选择题
问题：
下列说法错误的是（）
A.低温变脆现是压力容器经常遇到的现象。
B.并不是所有金属都会低温变脆。
C.具有体心立方晶格的金属，如碳素钢和低合金钢，都会低温变脆。
题型：单项选择题
Good evening, ladies and gentlemen. Welcome to the nine o’clock Mystery Hour. Today we’ll show you two British stories. We hope you’ll enjoy them.
About 900 years ago two green children arrived in a small village in south England. Their eyes and skin were green and they spoke a strange language. They were very tired and weak, so the people of the village looked after them. The boy died a year later, but the girl grew strong and lived the rest of her life there. And her skin colour turned back to normal day by day. Scientists say that sometimes of people don’t have enough food to eat for a long time, their skin goes very pale and can even turn green.
Loch Ness is the largest lake in Scotland. It’s a very deep and cold lake. For hundreds of years, people have talked about a monster(怪物) called Nessie which lives in the lake. About seventy years ago, two people saw something moving in the lake. They said that the animal was playing and rolling around in the water. Since then many people say they have seen the monster. Their descriptions are always the same. It looks like a dinosaur, with a very long neck and a small head. It has a big bump(包，肿块)on its back. People have tried to photograph the animal, but the pictures have not been very clear. Scientists don’t know whether there is a monster or not. Some say it may be a whale or a very large fish. Some think it’s a snake. Others say there’s nothing at all— nothing but people’s imagination. Maybe we’ll never know what’s in Loch Ness.
小题1:What kind of story is talked about in this programme?
A．Romantic stories.
B．Mysteries.
C．Horror stories.
D．Comedies.小题2:Which sentence is TRUE about the two green children?
A．They both enjoyed a long and happy life.
B．The girl’s eyes and skin were green all her life.
C．At first they spoke the same language as people in the small village did.
D．Maybe they hadn’t eaten enough for long before they reached the village.小题3:What does Nessie look like according to some witnesses?
小题4:What can we learn from the second story?
A．Scientists are still not sure whether there is a monster or not in Loch Ness.
B．Loch Ness is very deep and warm lake in Scotland.
C．People have taken very clear pictures of Nessie.
D．In fact Nessie is a whale or a snake.