B
In recent years, more and more young Chinese students are choosing to return to their homeland after studying abroad to realize their dreams. 28-year-old Jiang Yumeng is one of them. She shares her views. "In China, ordering food and shopping online are fast and affordable," she says. "But for international students with certain majors, it's more difficult to find jobs as good as those in China."
Jiang, who holds a master's degree in education from Johns Hopkins University in the US, now teaches at the Aerospace City School in Beijing.
Growing up in Qinhuangdao, a port city in Hebei Province, Jiang remembers her parents talking about their lives at her age—living in their workplace dormitories. Today, Jiang lives in a flat in the north of Beijing. She travels whenever possible. She visits both domestic and foreign places.
"Thanks to China's reform and opening-up policy, young people now have more chances to travel abroad and understand the differences between China and other countries," she explains.
During her time in the US, Jiang noticed many local media reports were biased(有偏见的) and based on old views. "If they travelled widely in China, they would see how much the country has changed over the past 10 or 20 years," she adds.
Over the last ten years, China has introduced a series of policies, from the central to local levels, to create better living conditions for returning overseas students.
()4. According to Jiang Yumeng, what advantage does China have?
A. Fair local media reports.
B. High university positions.
C. Easier job chances for international students.
D. Convenient food delivery and online shopping.
()5. What does the underlined word "those" in the first paragraph refer to?
A. Jobs.
B. Majors for international students.
C. Online shopping services in China.
D. Chances to travel abroad.
()6. What does the underlined word "domestic" mean in the third passage?
A. Home.
B. Urban.
C. Boring.
D. Popular.
()7. What is the main idea of this passage?
A. More Chinese students are studying abroad.
B. Some international students are looking for jobs in China.
C. More Chinese graduates are looking for jobs in foreign countries.
D. Returning overseas students are choosing to realize their dreams in China.

C(2025·江苏徐州二模)
When you eat something, your stomach breaks down its large molecules(分子) into smaller ones. Many people like to eat pineapples(菠萝). So when you eat pineapples, they can "eat" you by breaking down the molecules in your body. Pineapples have certain enzymes(酶) that can break down proteins(蛋白质). Many smaller molecules like the pearls (珍珠) come together to form the long pearl necklace of a protein. You can cut a necklace with scissors. In the same way, the enzymes in pineapples "cut up" proteins.
All living things have proteins. They are an important part of the cells(细胞) in your body. If an enzyme can break down a protein, it can break down cells as well. So will the cells of your tongue(舌头) when you eat pineapples. This is why your mouth will hurt if you eat too many pineapples.
But luckily, the cells in your tongue cure itself fast. And after you have swallowed the pineapple, the special enzymes will be broken down by your stomach. They won't "eat" you any more.
Why do pineapples have these enzymes? Some scientists believe that they are created by the pineapple to prevent animals from eating its fruits before they are ripe(成熟的). Once the fruit is ripe, its enzymes won't hurt an animal's tongue and the fruit will be okay to eat.
Another reason is that the enzymes help the seed(种子) to grow up. They play an important role in sending messages to the cells of the plant. These messages tell the cells when to start and stop growing. Without these enzymes, the seed may not be able to properly develop.
()8. In Paragraph 1, the enzymes in pineapples are compared to(被比作) .
A. scissors
B. necklaces
C. proteins
D. pearls
()9. The underlined word "swallowed" in Paragraph 3 can be put in Sentence .
A. The meat went bad so he it out after he tasted it.
B. This kind of pill should be whole, with some warm water.
C. The blackboard should be by the students on duty before class.
D. The stars from behind the clouds, shining directly into my house.
()10. According to the passage, what can be put in the blank to complete the following mind map?
A. When the pineapple "beats" stomach
B. What the important body part is
C. Why the pineapple has enzymes
D. When people eat a pineapple
()11. What can we infer(推断) from the passage?
A. Proteins play the most important role in the body.
B. Some fruits have certain self-protection skills.
C. Pineapples are not healthy fruit.
D. Enzymes are harmful to pineapples.