The scientists have conducted a series of experiments.A:actions B:tests C:effec

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问题 The scientists have conducted a series of experiments.

选项 A:actions       
B:tests
C:effects       
D:technologies

答案B

解析科学家们已经进行了一系列的实验。action“行动,活动”,如:The government is taking actions to deal with a housing crisis.政府正在采取行动解决住房危机。test“试验”,如:I try to finish the test within ten minutes.我试图在10分钟之内完成这项试验。 effect “影响”,如:The sunshine has many effects on the skin.阳光对皮肤有很多种影响。technology “技术”,如:Science and technology are the primary productive force.科学技术是第一生产力。只有tests意思上和experiments最接近。
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