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【单选题】

Which of the following statements is NOT the secret of composing good business letters in plain English? __

A.
use “you” and “we”
B.
use modern language
C.
use complicated words and long sentences
D.
use active not passive voice
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参考解析:
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【单选题】Nowadays, people advocate __ of business writing.

A.
a rather official style
B.
a rather conversational style
C.
a rather bureaucratic style
D.
a rather indirect style

【单选题】Which of the following statements on showing respect for others is NOT true __.

A.
In the workplace, showing respect for others may include listening without interrupting when others are speaking.
B.
In the workplace, showing respect for others may include not checking messages during a meeting.
C.
In the workplace, showing respect for others may include contributing to a conversation or meeting whenever you have an idea.
D.
In the workplace, showing respect for others may include double checking emails, text messages or instant messages before sending them.

【单选题】Which of the following statements on business phone calls is NOT true? __

A.
Before you pick up the phone, you'd better take some time to reflect on the purpose and topic of the call.
B.
When answering a business phone call, you'd better to pick up the phone immediately when it rings.
C.
If it is necessary to transfer a call, inform the person before doing so, to show respect.
D.
To be efficient on a phone, you'd better go into the point of your calling after a brief greeting.

【单选题】To ensure a successful business trip, use __ to stay in control of every detail.

A.
a secured international phone plan
B.
a choice of best accommodations
C.
a detailed plan of action
D.
the company’s travel policy.

【单选题】During a business trip, it’s important to __ and keep all of your receipts.

A.
use a company card to cover travel expenses
B.
track your purchases
C.
pay for item yourself
D.
create a backup plan

【单选题】下面关于时间和日期函数的说法错误的是( )。

A.
time()函数用于获取当前的UNIX时间戳
B.
date()函数将日期转换成UNIX时间戳
C.
mktime()和strtotime()函数都可以将给定的日期时间转换成UNIX时间戳
D.
microtime()函数可以获取到当前时间的微秒数

【单选题】麻黄碱平喘的分子机制是( )

A.
激活β1肾上腺素能受体,升高胞内cAMP水平,激活PKA
B.
激活β1肾上腺素能受体,降低胞内cAMP水平,激活PKA
C.
激活β2肾上腺素能受体,升高胞内cAMP水平,激活PKA
D.
激活β2肾上腺素能受体,降低胞内cAMP水平,激活PKA