第23题: [单项选择]Questions 11 to 18 are based on the conversation you have just heard.A) He is forgetful. C) He is looking for an assistant. B) His class is easy. D) His course is difficult. 参考答案:D 答案解析:[听力原文] M: Do you know any-thing about Professor Jackson’s class W: If you are looking for an
第34题: [单项选择]1岁健康的小儿,头围与胸围是 A. 头围34cm,胸围32cm B. 尖围46cm,胸围46cm C. 头围48cm,胸围49cm D. 头围50cm,胸围54cm E. 头围54cm,胸围62cm 参考答案:B 答案解析:出生时头围平均32~34cm,第一年前3个月头围的增长(6cm)约等于后9个月头围的增长值(6cm),即1岁时头围约为46cm;生后第二年头围增长减慢,约为 2cm;2岁时头围约48cm;2~15岁头
A. Soil can be used to clean things. B. Soil can store water and give it up when needed. C. Soil is all elastic material. D. Soil can provide water. 参考答案:B 答案解析:[解析] 推理判断题。问题:“好像能起到海绵作用的土壤层”的含义是什么 文中指出:a layer of soil acts as a sponge and regulates the movement