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发现室内有人中毒后应第一时间冲进去救援。

A.对
B.错
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单项选择题水是人类宝贵的自然资源。下列关于水的说法中,正确的是 ( )A. 地球表面的70.8%被水覆盖,因此不存在水危机B. 水在自然界分布很少,所以要节约用水C. 地球水资源的总储量很多,但能被人类所利用的淡水资源却很少D. 我国有漫长的海岸线,又有长江、黄河等大江大河,水资源非常丰富

单项选择题Table 1 shows the only four consumers in the market for hats have the following willingness to pay for a hat: Table 1 Buyer Willingness To Pay Amy 3 Carolyn 10 Refer to Table 1. If the market price for the good is $8, who will purchase the hat?

A.Carolyn and Danny only
B.Danny only
C.Amy, Bob, and Carolyn only
D.All four buyers would purchase the hat.