英语六级

单选题

A．It is damaged by extremely dry weather.
B．It loses water to stronger trees.
C．Insects destroy the tree' s bark.
D．Certain beetles introduce a fungus to the tree.

参考答案：D进入在线模考
According to the speaker，what causes the healthy elm tree to become weak?
细节题。根据You maybe interested in how the disease is transmitted，well，a very small insect called elm  bug beetle brings the fungus With it．可知榆树的疾病是由一种小昆虫传播的。因此，正确答案是D。

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1

A．By controlling the carriers of the disease.
B．By growing a stronger kind of the elm.
C．By watering infected elm trees.
D．By cutting down all infected elms.

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2

A．They painted in their spare time.
B．They lacked formal art training.
C．They used a more traditional approach to color.
D．They followed rules established by art schools.

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3

A．They lack bright colors.
B．They are realistic depictions.
C．They follow ancient traditions.
D．They are inferior to French naive paintings.

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