Unit 4 Section A 1a-1d 课时提升练 2025-2026学年人教版八年级英语下册

Unit 4  Section A 1a-1d 课时提升练

Ⅰ、根据句意及括号内提示，填入适当单词，每空一词。

1. The surface of the Dead Sea is 416 metres ________  sea level.

2. We are amazed at the natural ________ (wonder) of the world.

3. The Sahara Desert covers about nine million square ________ (kilometre).

4. Scientists do many ________ (measure) to know the height of mountains.

5. The water ________ (surface) of the lake is very smooth today.

6. Mount Qomolangma is the ________ (high) mountain in the world.

7. The Mariana Trench is the ________ (deep) point in the ocean.

Ⅱ、完形填空

阅读下面短文，从每题所给的A、B、C、D四个选项中，选出最佳选项。

Our world is full of amazing natural wonders. They make our planet 1______ and beautiful. Many people love travelling to these famous places to enjoy their beauty.

Mount Qomolangma is one of the most 2______  mountains in the world. It is 8,848.86 metres high and it is still 3 ______ a little taller every year. It is the highest point on Earth.

The Sahara Desert is the world’s 4 ______ desert. It is about 9,000,000 square kilometres in 5______  . The weather there is very hot and dry, so only a few plants and animals can live there.

The Dead Sea is a special lake. It is the lowest place on 6 ______ . Its surface is 416 metres below sea level. The water there has 7______  salt, so people can easily float (漂浮) on its surface.

The Mariana Trench is the deepest part of the ocean. It is about 11,000 metres deep. It is dark and quiet at the 8 ______ of the trench. Only a few special sea animals can live in such

a 9______  environment.

These natural wonders teach us how great nature is. It is important for us to 10______ and protect our nature.

1. A. boring  B. amazing  C. simple  D. quiet

2. A. famous  B. common  C. small  D. cheap

3. A. getting  B. turning  C. taking  D. making

4. A. smallest  B. highest  C. biggest  D. deepest

5. A. height  B. size  C. level  D. surface

6. A. space  B. land  C. earth  D. water

7. A. little  B. much  C. few  D. many

8. A. bottom  B. surface  C. level  D. square

9. A. comfortable  B. difficult  C. safe  D. relaxing

10. A. save  B. waste  C. pollute  D. forget

Ⅲ、阅读理解

There are many fantastic natural wonders on Earth. Here are four famous ones. Mount Qomolangma is the highest mountain in the world, with a height of 8,848.86 metres. Surprisingly, the mountain is still growing a little every year.

The Sahara Desert is the largest desert on Earth. It is about 9,000,000 square kilometres in size. It covers a large part of North Africa. The days are hot and the nights are cold in the Sahara.

The Dead Sea is not a real sea. It is a salt lake. It is the lowest place on earth. Its surface is 416 metres below sea level. Because there is too much salt in the water, people will not sink when they swim in it.

The Mariana Trench is the deepest part of the ocean. It is around 11,000 metres deep. It