依据我国产业结构的总体分类，房地产经纪机构属于( )。
A．第一产业
B．第二产业
C．第三产业
D．中介代理业
参考答案：C
同时检测血气分析：pH7.28，SO246%， PaO231.6mmHg，PaCO232.8mmHg，HCO3ˉ 15.7mmol/L，提示
A．呼吸性酸中毒
B．代谢性酸中毒
C．混合性酸中毒
D．低氧血症并代谢性酸中毒
E．低氧血症并混合性酸中毒
根据句子意思在空白处填上一个单词，使句意完整语法正确。
l. To start _____,I'd like to introduce myself to you.
2. The cake _____ delicious. Would you pass me one more?
3. Wait before you buy that watch. Let's _____ the price in this shop with the one in that
shop.
4. —What does "nervous" mean?
—It means"_____".
5. My teacher was angry because I didn't bring my homework _____ me this morning.
