三合诊检查在下列疾病中检查尤为重要，除了（）
A.生殖器肿瘤
B.内分泌失调
C.结核
D.内膜异位症
E.炎症
参考答案：B
今有氢气和氧气的混合气体10g，点燃充分燃烧后，恢复到室温，气体质量减少了9g，则原混合气体中的成分不可能是（ ）
A．5g氢气和5g氧气
B．1g氢气和9g氧气
C．2g氢气和8g氧气
D．氢气和氧气的质量比是1：4
句型转换。
1. He often goes to school by school bus. ( 对划线部分提问)
_______ _______ _______ he go to school by school bus?
2. There is some milk in the bottle. ( 改一般疑问句)
_______ _______ _______ milk in the bottle?
3. I need vitamins to stay healthy.( 改同义句)
I need vitamins to _______ _______.
4.My shoes are made of leather. (对划线部分提问)
___ ___ _ _______ ?
5.How much are the football stickers? (改同义句)
How much _______ the football stickers _______?
