单选题 Questions 15-18 are based on the following dialogue:

单选题 How did the woman spend last weekend?

A、 Relaxing at the seashore.
B、 Visiting her parents.
C、 Sailing on a boat.
D、 Preparing for a race.

【正确答案】 A

【答案解析】[听力原文]15-18
M: Hey, Karen. Looks like you got some sun this weekend.
W: Yeah, I guess so. I spent the weekend at the beach.
M: Oh yeah? That's great! Where did you stay?
W: Some friends of my parents live out there and they invited me for as long as I wanted to stay.
M: So what are you doing back here already?
W: Oh, I have a paper I need to work on, and I just couldn't do any serious studying at the beach.
M: I don't blame you. So what did you do out there I mean besides lie out in the sun, obviously?
W: I jogged up and down the beach and I played some volleyball. You know, I never realized how hard it is to run on sand. I couldn't even get through a whole game before I had to sit down. It's much easier to run in the wet sand near the water.
M: Not to mention cooler. Did you go swimming?
W: I wanted to, but they said the water isn't warm enough for that until a couple months from now, so I just waded in up to my knees.
M: It all sounds so relaxing. I wish I could get away to the beach like that.
W: It looks like you could use it. Don't tell me you spent the weekend in the library again.

对话开始的“got some sun this weekend”的意思是“这个周末晒了不少太阳”，这里的sun其实是sunshine的省略。女生说“I spent the weekend at the beach．”(我整个周末都在沙滩上)，所以选择A。

单选题 Why did the woman come home so soon?

A、 She was invited only for the weekend.
B、 The weather was too hot.
C、 She had an appointment.
D、 She had schoolwork to do.

【正确答案】 D

【答案解析】“I have a paper I need to work on，and I just couldn't do any serious studying at the beach．”的意思是“我有报告要写，而我在沙滩上没法认真学习。”以上这句话，就是解答这道题的关键。

单选题 Why did the woman have to stop playing in the volleyball game?

A、 She had to go home.
B、 She was too tired to continue.
C、 She had to finish her schoolwork.
D、 She was thirsty.

【正确答案】 B

【答案解析】对话中谈到打排球(play volleyball)的事情，而且女生说“I never realized how hard it is to run on sand．I couldn't even get through a whole game before l had to sit down．”意思是“我从来没有意识到在沙滩上跑那么累。我甚至打不完一场比赛而不得不坐下来。”所以答案就是B选项。

单选题 Why didn't the woman go swimming?

A、 She doesn't know how to swim.
B、 The water was too deep.
C、 The water was too cold.
D、 She didn't have enough time.

【正确答案】 C

【答案解析】对话中女生明确说了虽然她想去游泳，但是由于被告知现在水还太凉不适合游泳而只是下海去趟了趟水而已。“The water isn't warm enough for that until a couple months from now．”的意思是“水还不够暖和，要到两个月后才能适合游泳。”“waded in up to my knees”的意思是“在膝深的水中涉足一下”。所以选择C选项。