妊娠合并心脏病孕妇最易发生心衰的时期是( )
A．孕16~18周
B．孕20~22周
C．孕28～30周
D．孕32～34周
参考答案：D
读下列句子，选择正确的单词填在横线上。
1. We always __________ (clean, cleans) the house for Spring Festival.
2. Yesterday I __________ (washed, wash) the floor.
3. This restaurant __________ (make, makes) good soup.
4. Everyone __________ (like, likes) chicken.
5. Would you like __________ (some, any) soup?
6. I'm __________ (mix, mixing) the pork and vegetables.
苗圃地耕作最重要的环节是（）。
A.浅耕
B.耕地
C.耙地
D. * *
