生态厕所一般具有以下特点：地下设有____池，可以就地对人粪进行无害化处理，产生

补全对话，根据对话语境和提供的首字母，填写正确单词，补全对话。

A: Good morning. Washington Press.

B:Good morning. May I 1. s_____to Mr. Kent,please?

A: 2. H_____the line,please.….I'm sorry Mr. Kent's occupied at present.I'll put

you 3. t_____ to his secretary.

B: Thank you.

C: HeIlo,Mr. Kent's secretary speaking. May I 4.h_____you?

B: Yes. This is Carol Sainsbury speaking. May I leave a 5. m_____for Mr.Kent?

C: Certainly,Miss Sainsbury. May I have your 6. n_____?

B: My number is 56321847.

C: 56321847,I'11 ask Mr. Kent to call you 7. b_____when he's free.

B: Thank you 8. v_____much.

C: You're welcome.

在风险的构成要素中，（）是造成损失的直接的或外在的原因。

A.损失

B.风险事故

C.风险概率

D.风险因素

.—You ____ have set aside more time to play with our kids.

—I wish I ______, but you know how busy I was.

A．should, would

B．could, did

C．might, should

D．should, had

影响道路交通安全的因素包括人、车、道路和环境因素四大类。下列因素中，属于道路因素的有( )。

A．路面

B．视距

C．线形

D．气象

E．安全设施