1 . Rivers are very important. Humans rely on them for food and water. But rivers can destroy things, too. They can flood, or rise over their banks, making the water run into the nearby land. Floods can also kill humans and wildlife. However, floods are not always bad. Some ecosystems need them every once in a while.

Flooding can not only harm animals but also destroy habitats. For example, a flood in Australia in 2022 caused massive animal habitat loss. Flood waters can pick up dirt (泥土) from riverbanks, which makes the water dirty. Too much dirt will clog rivers and streams, preventing the river from flowing. Sometimes flood waters can carry pollution to the sea and harm marine life. In addition, flood waters can carry disease, including hepatitis A (甲肝) and cholera (霍乱) .

However, not everything about floods is bad. Sometimes they bring new life to ecosystems. Flood waters carry nutrients to the nearby land. Over time, the water dries up and leaves behind particles (微粒) of dirt and mud. The particles are called sediment (沉淀物) which can be good due to its ability to improve the dirt and helps plants grow. Floods are important to some animals as well. For instance, some animals see floods as a sign that it is time to mate or migrate. Floods leave sediment on river beds where baby fish can grow and carry nutrients for small animals in the water to eat. Moreover, in dry seasons, water might dry up, but floods help refill the wetlands, keeping the ecosystem going.

Floods are a part of nature. They can destroy living things and the environment. But some ecosystems need floods to survive.

1. What's the possible meaning of the underlined word “clog” in Paragraph 2?

A．Become.

B．Pollute.

C．Block.

D．Develop.

2. How do floods help ecosystems?

A．Nutrients carried by floods can make soil richer.

B．Floods make all the animals migrate more easily.

C．Tiny fish going with floods feed some animals.

D．Floods can improve the dirt and help plants grow.

3. What's the main idea of Paragraph 3?

A．The way in which floods feed animals.	B．The benefits of floods to ecosystems.
C．An effective means of improving soil.	D．The reason for people's appreciating floods.

4. What's the best title of this article?

A．The Many Effects of Flooding	B．The Secret of Flooding
C．Floods-Everything Is So Bad	D．Floods-a Part of Nature

2 . 听下面一段较长对话，回答以下小题。
1. How does the man suggest the woman get information?

A．By visiting the school.

B．By making telephone calls.

C．By talking with the graduate students.

2. What should the questions focus on according to the man?

A．Courses.

B．Special training.

C．Teachers.

3 . 听下面一段较长对话，回答以下小题。
1. How much will the woman pay for the mirror in all?

A．$60.

B．$80.

C．$200.

2. What is the most probable relationship between the speakers?

A．Husband and wife.

B．Mother and son.

C．Salesperson and customer.

4 . Where does the conversation probably take place?

A．In a cinema.

B．In a furniture shop.

C．In the woman’s house.

5 . What will the man do first?

A．Save the file on a U-disk.

B．Print the report.

C．Repair the printer.

6 . What is the probable relationship between the speakers?

A．Teacher and parent.

B．Professor and student.

C．Classmates.

7 . Who did the man get the book from?

A．Hannah.

B．Tom.

C．Deborah.

8 . When will the game end?

A．At 3:40 pm.

B．At 4:00 pm.

C．At 4:20 pm.

9 . Read Yuan Longping’s information and answer the questions.

Name	Yuan Longping	Nationality	Chinese
Occupation	Scientist	Birthdate	Sept.7, 1930
education	Graduated from southwest agricultural college in 1953
Life goal	Finding ways to produce more rice
Dream	To export his hybrid rice (杂交水稻) so that it can be grown around the globe
Achievement	In 1973, he developed hybrid rice which produced 20% more than normal rice
Hobbies	Listening to violin music, playing mahjiong, swimming and reading

1. Which of the following is Yuan Longping’s favourite music?

A．Pop music.

B．Country music .

C．Violin music.

D．Piano music.

2. Which of the following is NOT mentioned in the form?

A．His name.

B．His nationality.

C．His birthplace.

D．His occupation.

3. From the form,we know that ________.

A．Yuan Longping developed hybrid rice in 1972.

B．Yuan Longping graduated from Southwest College in 1953.

C．Yuan Longping was born in 1930.

D．Yuan Longping dreamt to win a big prize.

4. According to the form, which of the following is NOT true?

A．Yuan Longping was an expert in agriculture.

B．Yuan Longping hoped his hybrid rice could be grown only in China.

C．Yuan Longping graduated from college when he was 23 years old.

D．Yuan Longping’s life goal was to find ways to grow more rice.