Don’t turn off the computer before closing all programs. you could have problems.A．orB．andC．b——青夏教育精英家教网—

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(2013·高考北京卷)Don’t turn off the computer before closing all programs，________you could have problems.

A．or	B．and
C．but	D．so

科目： 来源：不详 题型：单选题

(2013·高考重庆卷)It’s not easy to change habits，________with awareness and selfcontrol，it is possible.

A．for	B．or
C．but	D．so

科目： 来源：不详 题型：单选题

(2013·高考北京卷)I took my driving license with me on holiday，________I wanted to hire a car.

A．in case	B．even if
C．ever since	D．if only

科目： 来源：不详 题型：单选题

(2013·高考天津卷)________ small，the company has about 1,000 buyers in over 30 countries.

A．As	B．If
C．Although	D．Once

科目： 来源：不详 题型：单选题

(2013·高考山东卷)________I have to give a speech，I get extremely nervous before I start.

A．Whatever	B．Whenever
C．Whoever	D．However

科目： 来源：不详 题型：单选题

(2013·高考江苏卷)In the global economy，a new drug for cancer，________ it is discovered，will create many economic possibilities around the world.

A．whatever	B．whoever
C．wherever	D．whichever

科目： 来源：不详 题型：单选题

(2013·高考湖南卷)You must learn to consult your feelings and your reason________you reach any decision.

A．although	B．before
C．because	D．unless

科目： 来源：不详 题型：单选题

(2013·高考四川卷)He is so busy.He cannot afford enough time with his son________he wants to.

A．even if	B．as if
C．because	D．before

科目： 来源：不详 题型：单选题

(2013·高考江西卷)She says that she’ll have to close the shop________business improves.

A．if	B．unless
C．after	D．when

科目： 来源：不详 题型：单选题

(2013·高考陕西卷)I have heard a lot of good things about you________I came back from abroad.

A．since	B．until
C．before	D．when

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