第2题: [填空题]We can learn from the text that many newly married people______ pay for what they need. 参考答案:find it hard to/can hardly 答案解析:从文章中可看出,因价格和建造成本日益上涨,美国人自己动手成了—种趋势。尤其新婚者发现要支付—切所需的开销是很难的,故有时不得不自己动手干。
第14题: [单项选择]Questions 11 to 18 are based on the conversation you have just heard. A. The man enjoyed the movie very much. B. The man saw a horror movie last Saturday. C. The woman asked the man to be careful at night. D. The woman went to the show with the man. 参考答案:B 答案解析:[听力原文] M:I still can’t get over the show last Saturday evening. I keep having nightmares all nigh
第17题: [单项选择]口腔非特异性免疫体系中组成化学屏障的除了() A. 硫氰酸盐 B. 乳铁蛋白 C. IgG D. 硝酸盐 E. IgM 参考答案:C 答案解析:唾液、龈沟液中的多种无机盐(如硫氰酸盐、硝酸盐)、有机物(如乳铁蛋白)和天然抗体(IgM)有抑制微生物生长的作用。硫氰酸盐是唾液抗过氧化物酶系统之一,对口腔一些微生物有抑制作用。IgG是特异性免疫分子