题目

下列命题中，真命题是( ) A．命题“若|a|＞b，则a＞b”    B．命题“若a＝b，则|a|＝|b|”的逆命题 C．命题“当x＝2时，x2－5x＋6＝0”的否命题     D．命题“终边相同的角的同名三角函数值相等” 答案：D3、A poor traveler stopped under the tree to eat the boiled rice and vegetables which he had brought with him. A few metres away, there was a small shop by the side of the road where a woman was frying fish and selling it to travellers. The woman watched the poor traveler carefully, and when he finished his food and began to go, she shouted rudely, “You have’ t paid me for the fried fish!” “But I have not had your fried fish!” he said. “But everyone can see that you enjoyed the smell of my fried fish with your rice and vegetables, ” said the woman, “If you had not smelled the fish, your meal would not have been so pleasant!” Soon a crowd collected , and although they supported the poor traveler, they had to admit that wind was blowing from the shop to the place where he had eaten, and that it had carried the smell of the fried fish to him. Finally, the woman took the poor traveler to a judge, who said: “ The woman says that the traveler ate his meal with the smell of her fried fish. The traveler agrees that the wind was blowing from the woman’s shop to the place where he ate his rice and vegetables and that it carried the smell of her fried fish to his nose while he was eating, so he must pay for it. What does your fried fish cost?” he asked the woman. “25 cents a plate, ” she answered , delighted. “Then go outside together,” said the judge. “There the traveler must hold up a 25 cent piece so that its shadow falls on the woman’s hand. The price of the smell of a plate of fried fish is the shadow of 25 cents. 1．Why did the traveler refuse to pay the woman for the fried fish? A．Because he was poor. B．Because he was rude. C．Because he was supported by a crowd. D．Because he hadn’t eaten her fried fish at all. 2．When the judge asked the woman a question, she felt          . A．excited            B．anxious          C．glad                D．angry 3．Which of the following statements is true? A．The traveler bought the boiled rice and vegetables and ate them by the side of the road. B．The judge had no idea what the woman meant. C．In the fifth paragraph, the first “it” has the same meaning as the second “it”. D．The woman got nothing but the shadow of twenty-five cents in the end 4．What do you think of the judge after reading the passage? A．He was foolish              B．He was clever C．He was neither foolish nor clever D．He was kind enough to give the woman twenty-five cents