阅读理解。
Jim is an English boy. He is a good student. He is in a red coat. Kate is a girl. She is Jim's sister. She is
a very smart girl. She is in a blue jacket.
Lucy and Lily are Americans. They are sisters. They like the same color. They are in red sweaters. They
are students, too.
Jim, Kate and the sisters are good friends. Jim and the sisters are in the same school, but Kate isn't a
student. She is only four years old. She is at home.
1. Jim is _______.
A. English
B. American
C. Chinese
D. Japanese
2. Kate is _______.
A. Lucy's sister
B. Lily's sister
C. Jim's sister
D. a student
3. What color is Kate's jacket?
A. It's red.
B. It's blue.
C. It's white.
D. It's yellow.
4. Jim, Kate, Lucy and Lily are _______.
A. in the same school
B. good students
C. good friends
D. brothers and sisters
5. Which of the following is right?
A. Jim has two sisters.
B. Lucy and Lily like different colors.
C. Lucy is an English girl.
D. Jim is Kate's brother.
2 NH3 (g); △H <0, 该反应应采取的适宜条件是（ ）