II Read the following passages and then answer the questions.
A
The Mississippi River is the fourth largest in the world. It includes all or parts of thirty-one U.S. states and a bit of Canada. The river is home to many wild animals. At least 260 kinds of fish live in it. More than fifty types of mammals live along the river. Meanwhile, the lower Mississippi River has no dams, so it causes some floods, which damage the houses near the river. However, the floods are not all bad. Along the river’s banks, the rich soil that floods leave behind makes good farmland for cotton and grains.
() Which of the following sentences is the opinion?
A.The Mississippi River is the fourth largest in the world.
B.More than fifty types of mammals live along the river.
C.However, the floods are not all bad.
D.The river is home to many wild animals.

C

首先明确事实与观点的区别，事实是可验证的客观陈述，观点是个人看法或判断。A、B、D项均为可验证的客观事实，C项“However, the floods are not all bad.”表达了对洪水影响的主观判断，属于观点。

B
Our dreams come from a part of the brain that contains our thoughts and memories. A person can have up to six dreams a night, and each dream usually lasts from 10 to 40 minutes. Everyone dreams, but not everyone remembers their dreams. Most people dream in color, usually with sound. And we usually dream about ourselves and the people we know.
Experts say that dreams help us get in touch with our deeper feelings. They can tell us a lot about ourselves and help us figure out problems. Another scientist Robert thinks dreams come from our memories. He believes we dream to remember, because memories are useful to the brain. Robert says the purpose of dreaming through these memories is to help us learn from the past.
() Which of the following sentences is the fact about dreams in the passage?
A. We usually forget our dream within five minutes of waking up.
B. We use dreams to get in touch with our deeper feelings.
C. Dreams can help us figure out problems.
D. Everyone dreams, but not all remember their dreams.

D

题干要求找出关于梦的客观事实，需要根据原文内容找出对应的描述。
选项A，原文中没有提到“我们通常在醒来后五分钟内忘记梦”相关内容，所以该选项不在原文中体现，不是正确选项。
选项B，原文“Experts say that dreams help us get in touch with our deeper feelings.”表明是专家的观点，不是客观事实，所以该选项不是正确选项。
选项C，原文“They can tell us a lot about ourselves and help us figure out problems.”表明梦的作用是专家的观点，不是客观事实，所以该选项不是正确选项。
选项D，原文“Everyone dreams, but not everyone remembers their dreams.”表明每个人都会做梦，但不是每个人都记得自己的梦，这是客观事实，所以该选项是正确选项。