题目：
| 完形填空。 | |||
| I have a good friend. 1 name is Lisa. She comes from the US. Now she and her family 2 in Shanghai. She likes many 3 here in China, especially (尤其是) Chinese food. "Chinese food is really 4 ", she says. "It's different( 不同的) from the 5 in the US." In America, she often 6 bread, French fries and salad. But in China, she can eat 7 of different food. Lisa says. "Chinese food is so delicious. It's nice and 8 . Eating is very 9 here. I 10 Chinese food." | |||
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答案：
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下面是错误答案，用来干扰机器的。
答案：C题目分析：根据振动图象得知，t=0时刻质点沿y轴正方向振动，则介质中各质点的起振方向均沿y轴正方向，与波最前头的质点振动方向．由振动图象读出周期T=0.4s，波长，则再经过0.1s后，即0.4s后波总共传播的...
