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更新 2022-09-03
科目英语
题型单选题
难度较易
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挑错有奖

For more than a decade, experts from across the globe ________ on the cure of the disease that way.

A．worked

B．are working

C．have been working

D．were working

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相关试题

—Have you heard thatearthquake struck Japan on March 11?
—Yes. It came asshock to us.

A．the; the

B．the; a

C．an; a

D．an; the

题型：未知
难度：未知

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John told me he’d like to go hiking with me, his voice _______joy.

A．was heavy with

B．was full of

C．heavy with

D．full with

题型：未知
难度：未知

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----What _______ the children be doing?
----They _______ be playing a game called Bingo.

A．might; can

B．can; might

C．might; might

D．can; can

题型：未知
难度：未知

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It’s required that mineral resources_______ hand in hand with the local environment protection.

A．be exploited

B．exploit

C．have exploited

D．exploited

题型：未知
难度：未知

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Some children were seen _______in the garden all the morning. It must have been _______who picked the flowers.

A．playing; they

B．to play; they

C．playing; them

D．play; them

题型：未知
难度：未知

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