题目信息
Lacking information about energy use, people tend to overestimate the amount of energy used by equipment, such as lights, that are visible and must be turned on and off and underestimate that used by unobtrusive equipment, such as water heaters.
A:equipment, such as lights, that are visible and must be turned on and off and underestimate that
B:equipment, such as lights, that are visible and must be turned on and off and underestimate it when
C:equipment, such as lights, that is visible and must be turned on and off and underestimate it when
D:visible equipment, such as lights, that must be turned on and off and underestimate that
E:visible equipment, such as lights, that must be turned on and off and underestimate it when
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正确答案：
D:visible equipment, such as lights, that must be turned on and off and underestimate that
答案D
题目大意：缺乏有关能源使用的信息，人们往往高估了可见光且必须打开和关闭的设备（例如，灯光）所消耗的能量，而低估了诸如热水器之类的非干扰性设备所消耗的能量。
A.错误。That代指equipment，后谓语动词应该用单数is
B.错误。That代指equipment，后谓语动词应该用单数is
C.错误。it 指代不清楚。
D.正确。
E.错误。it 指代不清楚。
题目大意：缺乏有关能源使用的信息，人们往往高估了可见光且必须打开和关闭的设备（例如，灯光）所消耗的能量，而低估了诸如热水器之类的非干扰性设备所消耗的能量。
A.错误。That代指equipment，后谓语动词应该用单数is
B.错误。That代指equipment，后谓语动词应该用单数is
C.错误。it 指代不清楚。
D.正确。
E.错误。it 指代不清楚。
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