题干

自然界中动物种类繁多,形态千差万别.下列有关叙述中,错误的是(    )

A:鸟类的身体大都呈流线型,有与肺相通的气囊

B:哺乳动物大多体表被毛,体腔内有膈,胎生、哺乳

C:昆虫有三对足,两对翅,体外有外骨骼

D:蚯蚓用湿润的体表呼吸,身体分节,属于节肢动物

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D

同类题5

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    At a talk to some businessmen earlier today, one fellow asked me, “Would you give money to a homeless person, even when you know he's going to use it to buy alcohol?” I replied, “If all was giving was money, it'll be one thing. But for me, whenever I do give money, that's just the wrapping (包装纸) . The real gift is hidden inside – it's love. And l haven't ever found any reason to limit gifts of love.”

    By the end of the night, I decided to get some pizza. In front of me in line was a homeless-looking man. He was counting the few dollar bills in his hand, over and over again, until it was his turn to order. Just then, he told the young woman behind the counter, “I'll have the full cheese pizza.” “Full?” she countered. “It's really big.” she added, although what she really meant to say is that it'll be too expensive for him. “Yeah, the full.” “$18.65,” she submitted. The bills he was counting weren't going to make it. I wasn't intending to get the whole pizza for him. But thinking back to my conversation with the business man, l realized that money was really just the wrapping.

    I made my move. “Can you charge that pizza with my order?” I said to the cashier. “Really?” the homeless-looking man said. “Really?” the young woman behind the counter repeated. “Yes, really.” That disheveled (凌乱的) man and I had a sweet silent moment. To his silent question of why I was doing it, I added, “Just pay it forward for someone else.” And he said, “Well, you know what? I was actually treating these five homeless guys out there.” He was actually paying it forward, in the first place. What an unexpected fortune to get a chance to be a part of a man's act of kindness.

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