4. As suggested by the text, how can glass be made less brittle?

　 A. It can be heated an then cooled quickly.　 B. It can be cooled and then heated slowly.

　 C. It can be heated and then cooled slowly.　 D. It can be cooled and then heated quickly.

3. In annealing, the required hardness of a metal depend on　　　 .

　 A. the quantity of water used 　 B. the temperature of the metal

　 C. the softness of the metal D. the timing of the operation

2. Why do people put hot metal in water?

　 A.Tomake it hard　 B. To make it soft.　 C. To make it cool.　 D. To make it brittle.

1. Annealing can make metal　　　　　 .

　 A.hardand tough(韧)　 B. hard but brittle　 C. soft but tough D. soft and brittle

30、(1分)

　　 Annealing is a way of making metal softer by heating it and then letting it cool very slowly. If metal is heated and then cooled very quickly, for example by dipping (浸) it in water, it will be very hard but also very brittle (脆) that is, it will break easily. Metal that has been annealed is soft but does not break as easily. It is possible to make metal as hard or as soft as is wished, by annealing it. The metal is heated, and allowed to cool slowly for a certain length of time. The longer the heated metal takes to cool slowly, the softer it becomes. Annealing can also be used on other material, such as glass.

7. As we learn from the text, which of the following was generally considered the most important in the life of a woman in the U.S. in Mary Cassatt’s times?

　 A. Money　 B. Career　 C. Marriage　 D. Courage

6. What do we know about Mary Cassatt’s character?

　 A. She was brave in going against old ideas

　 B. She got tired of always obeying her father

　 C. She hated playing at drawing and painting

　 D. She did not mind being poor at all

5. What do we know about Robert Cassatt’s character from the text?

　 A. He was a cruel man 　 B. He was a stubborn(固执的) man

　 C. He knew nothing about art D. He knew little about his daughter

4. What do we know about Mary Cassatt’s marriage (婚姻)?

　 A. Her marriage failed because she never gave a thought to her husband and family.

　 B. She never married because she did not want to be just a wife and mother.

　 C. After marriage she decide to give up her husband rather than her career(事业).

　 D. She did not marry because for a lady of her social position to marry below her was unthinkable.

3. What made Mary Cassatt’s “struggle” to become a recognized artist especially hard?

　 A. She was a woman.　 B. Her father opposed her.

　 C. She had no social position.　 D. She did not come from an artist’s family.