第6题: [单项选择]Why is Harry unhappy A. He was refused by the college he really wanted to go to. B. He didn’t really want to go to any colleges. C. His tests were not so good. 参考答案:A 答案解析:[听力原文]6-7 M: Did you hear about Harry W: No, what happened M: He’s really sad. He didn’t
第17题: [单项选择]When solid changes to liquid, it ______ heat from all substances near it and this reduces the temperature surrounding it. A. takes in B. takes on C. takes off D. takes down 参考答案:A 答案解析:[解析] 本句意为“固体变成液体时,它要从附近的物质中吸收热量,这将降低周围的环境温度”。take in接受,吸收;take on披上,雇用,呈现,流行;take off拿掉,脱衣,起飞;take d
第28题: [单项选择]若变量a,i已正确定义,且i已正确赋值,下面合法的语句是( )。 A. a==1 B. ++i; C. a=a++=5; D. a=int(i); 参考答案:B 答案解析:[解析] 选项A) 缺少分号,是一个表达式,而不是语句;选项C) 包含一个不合法的运算符“++=”;选项D) 应改为a=(int)i;。