第22题: [单项选择]Both Alice's parents are very interested in their daughter's attempt ______ the channel. A. to swim B. swim C. swimming D. swam 参考答案:A 答案解析:to swim是动词不定式,用在该句中可以构成定语。因该句中有名词attempt,其后通常接不定式作定语。
第23题: [单项选择]胸膜炎引起的胸痛特点是 A. 灼热痛 B. 胸侧部痛 C. 胸骨后痛 D. 仰卧位减轻 E. 运动时减轻 参考答案:B