扫描二维码，直接登录
题库 / OG2015V-SC-34
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.
equipment, such as lights, that are visible and must be turned on and off and underestimate that
equipment, such as lights, that are visible and must be turned on and off and underestimate it when
equipment, such as lights, that is visible and must be turned on and off and underestimate it when
visible equipment, such as lights, that must be turned on and off and underestimate that
visible equipment, such as lights, that must be turned on and off and underestimate it when
还没有题目讲解（毕出老师会陆续发布对官方考题的解读，请保持关注）。
the pronoun “it” actually refers to “the amount of energy used by visible equipment” because this is the only kind of energy the sentence has mentioned so far.
登录 或 注册 后可以参加讨论