毒性甲状腺肿（Graves病）的超声表现是（）。
A.甲状腺弥漫增大，内部呈中-低回声，血流呈"火海征"
B.甲状腺峡部明显增厚，回声弥漫减低，不均匀，血流丰富
C.甲状腺呈不对称增大，内部见多个结节，有丰富的血流，有时绕结节而行
D.甲状腺轻度肿大，回声均匀，内部见不到结节
E.甲状腺对称肿大，内部回声减低，探头按压有触痛
参考答案：A
| 阅读理解。 |
| James is an American boy. He's going to be a student in a middle school in Shanghai. He wants to know much about China, because his parents tell him there are many festivals in China. So now he's trying to find something about Mid-Autumn Festival (中秋节). Here's what his computer tells him. Mid-Autumn Festival usually comes in September or October. On that day many families will have a big dinner. They will send moon cakes to their friends as presents (礼物). Then in the evening people will go out to celebrate (庆祝) the round moon. It seems bigger and brighter. They also tell the story of Chang'e flies to the moon. It's the time for all the family members to get together. James thinks of Thanksgiving Day in his country. It's almost the same as Mid-Autumn Festival in China. So he thinks he's going to talk about that to his Chinese friends. Here's what he's going to say: The American people celebrate Thanksgiving Day on the forth Thursday of November. On that day people give thanks to God for giving them a good harvest (丰收). It's usually a family day. People get together to celebrate the harvest. A big turkey (火鸡) and some pumpkin pies (南瓜派) are their special food for the festival. They always have a lot of eat. |
| 1. Who tells James something about Mid-Autumn Festival in China? |
[ ] |
| A. His parents. B. His computer. C. His friend. |
| 2. When does Thanksgiving Day in America come? |
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| A. In September or October. B. In November. C. In July. |
| 3. On Thanksgiving Day. American people do everything except (除…之外) that ______. |
[ ] |
| A. the family members get together B. people celebrate the harvest C. people eat moon cakes to celebrate the festival |
| 4. What is the meaning of the word "Thanksgiving"? |
[ ] |
| A. People give thanks to their parents. B. People give thanks to their country. C. People give thanks to God for giving them a good harvest. |
| 5. Which of the following is right? |
[ ] |
| A. People will give moon cakes to their friends as presents on Mid-Autumn Festival. B. Thanksgiving Day is on Tuesday. C. People often eat turkeys and pumpkin pies on Mid-Autumn Festival. |