Jumpingspidersarevitalforagriculturepestcontrol,and　61　...

问题详情：

Jumping spiders are vital for agriculture pest control, and　61　species can even learn to distinguish the color red in their prey(猎物), a 2015 study　62　(show). They are able to learn to associate this color　63　poisonous prey and avoid it or find out high quality prey.

Jumping spiders will consume almost any small pests,　64　(range) from caterpillars to flies. Not only does this　65　(natural) reduce the amount of agricultural damage from insect pests, but it means farmers can avoid using chemical treatments　66　(protect) their crops.

In total, a large number of jumping spiders, over 5,000 species,　67　(find) on every continent except Antarctica by now. Being able to adapt to the environment is a key evolutionary skill. Since the spiders are able to distinguish　68　foods are nutritious, from those that are　69　(harm), they can stay alive longer and manage a wide　70　(various) of pests.

【回答】

61．the

62．showed

63．with

64．ranging

65．naturally

66．to protect

67．have been found

68．which

69．harmful

70．variety

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