女性，22岁，因右下智齿低位埋伏阻生，要求拔除。 为减少出血，保持术野清晰，常在麻约中加入A．肾上腺

Hello!()？

Hello, this is Michael from Tianjin Vanguard Trading Inc.

A、Who are you？

B、What are you？

C、Who is that？

— Hello, this is David speaking. Is Michael there？

— _________

A. Hold on. I’ll get him.

B. No, he isn’t.

C. Yes, I am David.

D. Yes, what do you want？

Michael: Hello, may I speak to Terry？ Bob: I'm sorry but Terry is not in now. ______

A．Give him a call later.

B．This is his colleague.

C．May I take a message？

D．Have you got a word for him？

Michael: Hello, may I speak to Terry？

Bob: I'm sorry but Terry is not in now. _________

A．Give him a call later.

B．This is his colleague.

C．May I take a message？

D．Have you got a word for him？

- Hello, who is calling？

- _________

A.Mary is out.

B.Hello, this is William from IBM.

C.He's in the office.

D.Can you hold the line？

A．std::vector <int> v {2, 3, 12.0};

B．//C++17 std::vector v {2, 3, 12};

C．std::vector <char> v {"Hello"};

D．std::vector <std::string> sv{"Hello", "World"};

A、select * from user where username=hello &password=1234

B、insert into user values ("1","hello","1234")

C、select * from user where username="hello" &password=1234

D、select * from user where username="hello" &password="1234"

A:().

B:Hi. My name's Rose. Are you from London？

A. Hello, I'm Paul. What's your name？

B. Hello, who are you？ What's your name？

C. Where are you from？

A．['hello', 'hello'] ['hello', 'hello']

B．['hello'] ['hello', 'hello']

C．['hello', 'hello'] ['hello']

D．['hello'] ['hello']