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【单选题】
下面四幅图均表示在一个食物链中消费者和生产者的比例，在每一个图最下面一层都表示生产者．问哪一个图可以表示下面这个食物链：“草→蜗牛→画眉→食雀鹰”？（ ）A.
B.
C.
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皮皮学刷刷变学霸
举一反三
【单选题】对便秘患者的护理中哪项是错误的
A.
多吃含纤维素高的食物
B.
每天至少应保证水的摄取量达1500-2000ml
C.
腹部自我按摩
D.
病人有发热、恶心或腹痛时可用轻泻剂
【简答题】•There is a for two teams. Twenty-one balls were planted in the field of play between the two tribes, who took turns removing the flags. Each team at its turn could choose to take away 1 or 2 or ...
【单选题】____ good books, the point is not to see how many of them you can get through, but rather how many can get through to you.
A.
In the event of
B.
In the case of
C.
On account of
D.
On top of
【简答题】Task9B: Fill in the blanks with the words given below. Change the form where necessary. The words: confidential; combine; counterpart; productive; current; collaboration; merit; consumption; facilitat...
【单选题】劳力性呼吸难的发生机制中下列哪一项不存在?
A.
体力活动时耗氧量增加
B.
体力活动时CO2排出增加
C.
体力活动时心率增快
D.
体力活动时需氧增加
E.
体力活动时回心血量增加
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