天津市西青区某羊场所饲养的部分羊只出现了精神不振，食欲量下降了1/3，被毛粗乱，严重贫血，红细胞计数为5000个/ml，消瘦，颈下、胸前水肿，下痢和便秘交替出现等症状。剖检发现第四胃出现水肿，并发现虫体，大小15～30mm，淡红色的，呈毛发状。根据临床症状、剖检和虫体形态特征进行诊断，该病最可能为( )。
A．捻转血矛线虫病
B．夏伯特线虫病
C．仰口线虫病
D．食道口线虫病
E．毛圆科线虫病
参考答案：A
 Mr. Klein told the class that a new student, Inez, would join them soon. He 1 that Inez was deaf. She “talked” with others by using sign language. Mr. Klein knew sign language, and he decided to teach 2 students so that they could also “talk” with Inez. First, they learned to sign the letters. Some letters were hard to 3 . Other letters, such as C ,were easier because the shape of the hand was the same as the shape of the letter. The 4 thing they learned was finer spelling. They signed one letter after another to spell a word. They 5 with two-letter words such as at and on . Then they spelled 6 words. Finally, Mr. Klein showed that 7 one sign could be used for a whole word. To make the sign for the word fine, a person spreads out the fingers on one hand, 8 the thumb(拇指) to the chest(前胸) , and moves the hand away from the chest. Signing is not just done with the hands. Expressions on the face are also 9 . The students learned to sign a question mark by using expressions on the face. When Inez first entered the classroom. She looked 10 . But the students signed, “Good morning, Inez. ” She gave the class a big smile and signed back, “What a wonderful welcome !”
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