Read the article and select the best answer. Article: Deserts do not stay the same size .Sometimes they grow bigger. Sometimes they get smaller. The world's biggest desert, Sahara, is in Africa. Right now, the Sahara desert is growing fast. Why is the Sahara growing ? In some places , People farm too much. In other places ,animals eat all the grass. or people cut down the trees. This makes the soil weak. Weak soil lets the desert grow. Why is it a problem? people can not grow food in the desert. people can not build houses, hospitals , or schools in the desert . so people must leave their homes .They must live somewhere else. What can people do ? They can plant trees. They can also farm less. These things make soil stronger. maybe the Sahara will stop growing . It's a big problem. Many people must work together to solve it? Question: What is the main idea ? Options: A: The Sahara Desert is in Africa . B: Farming too much makes the soil weak. C: Big problem are caused by the growing Sahara desert. D: Planting trees will help the world.
D

Read the article and select the best answer. Article: My name is Jane. I'm now living in a small house with my parents. Life for us is difficult but happy. I must study hard to buy a big new house someday. I call it a dream house. My dream house is near the sea. It has three floors with five bedrooms, three bathrooms, two big dining rooms and two living rooms. When my friends come to visit me, I will have enough bedrooms for them. We have a swimming pool behind the house and a garden in front of the house. In the morning, my parents can _ in the garden to keep them healthy. The air will be very good and nice. When it's hot, we can have a swim in the swimming pool. Life will be easy for us. Question: Jane is living a(n) _ life with her family now. Options: A: difficult but happy B: difficult and sad C: easy and happy D: easy but sad
A

Read the article and select the best answer. Article: Penguins live together, but each pair has a little piece of ground of their own. When a penguin wants to walk through its neighbor's ground, it must ask for permission . If it does not, it will have to fight. Penguins come and go all day. They fight for fish and look after their children. All penguins are good parents--the male penguins are perhaps the best parents in the world. They choose their wives in the dark They can only hear them--not see them. Then the female penguins lay their eggs and go away for about two months. The males look after the eggs. If the eggs get cold, there will be no chicks. There is no food. The snow falls and the wind blows--sometimes at 150 kilometers an hour. The penguins do not move. When the females return from the sea, they will not remember their husbands. It doesn't matter. Only one thing-- their eggs. Male penguins never fight--unless a penguin leaves a chick for a minute. Then they fight because they all want it. They are strange and wonderful birds. Question: It seems interesting and unusual that the male penguins choose their wives _ . Options: A: when the female penguins return from the sea B: just by hearing in the darkness C: each time they see their lovely females D: after they have had their own grounds
B