【题目】

What are fossils?

Fossils are the remains of plants or animals. For such remains to be considered fossils, scientists have decided they have to be over 10,000 years old.The word fossil comes from the Latin word “fossilis”, which means, “dig up”.Fossils can be divided into “body fossils” and “trace(痕迹) fossils”. Body fossils are the remains of a plant or animal’s body. Trace fossils are the remains of the activity of an animal, such as footprints, egg shells, and nests.

How are fossils formed?

Some animals were quickly covered after their death by sediment(沉淀物) like earth, mud or sand. Over time, the parts of the animals that didn’t rot (usually the harder parts like bones and teeth) were covered in the newly formed sediment. Then, a lot of chemical changes happened to the animals bodies. Water with minerals(矿物质) went into the bone and took the place of the chemicals in the bone with rock-like minerals. In the end we get a heavy, rock-like copy of the original object - a fossil. There weren’t any changes in size and shape when an object changed into a fossil, but the fossil of a bone doesn’t have any bone in it!It is chemically more like a rock! According to scientists, fossils have been found on every continent(大陆) on Earth.

1Trace fossils can’t be formed from the ______ of some kind of animals.

A. footprints B. nests C. eggs D. bodies

2______ brings the rock-like minerals into the bone.

A. Sunlight B. Earth C. Water D. Air

3According to the last paragraph, the fossil is as ______ as the original object.

A. heavy B. big C. old D. clean

4We can know that ______ from the passage.

A. scientists think that the fossils may have a history of 100 centuries.

B. people haven’t found any fossil on the continent of Africa.

C. we can find some real bones in the fossils of a bone.

D. there are many kinds of sediment in the fossils.

5This passage most probably comes from ______.

A. an advertisement B. a medical magazine C. a science book D. a notice

【题目】

Nowadays bike-sharing has been very popular in China. Mobike (摩拜单车) is one of the market leaders in the hike-sharing business.

What is Mobike?

Mobike was founded in January, 2015. It is supported by Tencent (腾讯). People in many cities, such as Beijing, Guangzhou, Jinan as well as Shanghai, have a chance of using the app (软件). The total number of Mobike app users is larger than that of any other bike-sharing app users.

Who uses Mobike?

According to a survey, 53.23% of the Mobike users are men, while 46.77% are women. Mobike is not only popular with young people, but also wins the hearts of the old. It shows that retired men traveled the longest distances (距离) by shared bikes.

Why do people use Mohike?

Chinese people use Mobike for different reasons. Users can rent (租借) a bike at a low price, usually about one yuan an hour. It also offers people a better choice for short journeys in cities, especially when people can’t find a bus or the underground to take. What’s more, it’s helpful in traffic. And the most important is that it can help improve the environment.

1When was Mobike founded?

________________________________________________________

2True or false. (“T”代表正确,“F”代表错误)

According to the passage, mobike app has the largest number of users of all the bike-sharing apps.

3Translate the underlined sentence into Chinese.

________________________________________________________

4Why do Chinese people use Mobike? (At least 2 reasons.)

________________________________________________________

5Give a proper title (题目) to the passage.

________________________________________________________

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