油品及其蒸气的毒性主要是通过().呼吸道和消化道进入人体。
A.口腔
B.心脏
C.肺
D.皮肤接触
参考答案:E
句型转换。
1. He likes tomatoes for lunch. (改为一般疑问句)
______ he ______ tomatoes for lunch?
2. Tom plays football every day. (改为否定句)
Tom ______ ______ football every day.
3. Maria's alarm clock is on the desk. (对画线部分提问)
______ ______ Maria's alarm clock?
4. This is my dictionary. (改为复数形式)
______ ______ my ______.
5. My ID card number is 3707178898764. (对画线部分提问)
______ ______ ______ ID card number?
下面现象中,构成火灾保险责任的是()。
A.烘箱烘烤食物时,因变压线圈着火燃烧并殃及其他物品
B.在生产或生活中有目的用火
C.为了防疫而焚毁被玷污的衣物
D.烘烤、烫、烙造成焦糊变质等损失