问题
多项选择题
()混合到一定比例时,就形成爆炸性混合物。
A、空气
B、易燃液体的蒸气
C、易燃液体
D、易燃固体
答案
参考答案:A, B
()混合到一定比例时,就形成爆炸性混合物。
A、空气
B、易燃液体的蒸气
C、易燃液体
D、易燃固体
参考答案:A, B
用方框内适当的词填空(有三个多余选项)。 | |
3 some flowers in the room(客厅). They arevery nice. There _4 some books on the dress-er. Kate often(经常) does her homework in theroom. Kate's father and mother are 5 . Hermother teaches Chinese and her father teachesEnglish. Kate has a brother. 6 name isMike. He's only 7 years old. Kate 7 Mikevery much. |