-
1、We can use ____ to observe the stars in the sky.A、glasses B、telescopes C、cameras D、microscopes
-
2、The government is taking actions to deal with the problem of ____ pollution.A、air B、land C、water D、all of the above
-
3、Learning about the Earth and its neighbors can ____ our interest in science.A、excite B、make C、have D、take
-
4、The Earth is one of the ____ in the solar system.A、stars B、planets C、satellites D、moons
-
5、The astronauts landed on the ____ in 1969.A、Earth B、sun C、moon D、Mars
-
6、____ plastic bags can help protect the environment.A、Using B、Use C、To use D、Used
-
7、The ____ is made up of the sun，planets and other objects.A、Earth B、solar system C、moon D、star
-
8、We should ____ waste to save resources.A、increase B、reduce C、make D、have
-
9、Many animals are in danger because of the ____ change.A、weather B、climate C、air D、temperature
-
10、Scientists are trying to ____ more about other planets.A、see B、watch C、learn D、look
-
11、The ____ on the moon is much weaker than that on the Earth.A、air B、gravity C、water D、light
-
12、It's our duty to ____ the environment of the Earth.A、keep B、protect C、save D、make
-
13、We should use ____ resources like wind and solar energy to protect the Earth.A、natural B、renewable C、useful D、clean
-
14、The sun is at the ____ of the solar system.A、center B、middle C、side D、top
-
15、The Earth is a special planet in the ____ because it has life.A、solar system B、moon C、star D、universe
-
16、假如你叫李华，你刚从北京旅行回来。请你根据以下要点，写一篇短文向你的笔友Tom介绍你的旅行经历。
要点：（1）你去了北京哪些地方；（2）你在北京的活动（如参观景点、品尝美食等）；（3）这次旅行对你的意义。
要求：语句通顺，不少于80词，可适当发挥。
-
17、How about taking a trip to the mountains？（改为同义句）
taking a trip to the mountains？
-
18、It's an interesting talk show. (改为感叹句）
interesting talk show it is!
-
19、The trip is exciting.（改为否定句）
The trip exciting.
-
20、We should protect the old buildings.（改为一般疑问句）
we the old buildings？