One of the methods of introducing foreign genes into a plant is to make use of

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One of the methods of introducing foreign genes into a plant is to make use of certain
soil bacteria to infect the plant and transfer several of blue genes to the infected plant
cells, _____ in high rate of plant cell pision.

A．results

B．resulting

C．to result

D．resulted

答案

解析

略

举一反三

____ his telephone number, she had some difficulty getting in touch with Bill.

A．Not knowing	B．Knowing not
C．Not having known	D．Having not known

题型：不详难度：| 查看答案

You can’t imagine what difficulty I took _____ your home.

A．find

B．to find

C．finding

D．found

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—Do you have anything more ___, sir? —Not at the moment. Have a rest then.

A．typing

B．to be typed

C．typed

D．to type

题型：不详难度：| 查看答案

Which do you enjoy ___ your spare time, reading or playing chess?

A．to spend

B．spend

C．spending

D．being spent

题型：不详难度：| 查看答案

The way she thought of _____ enough money was to sell her hair.

A．getting

B．to get

C．and got

D．for getting

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