严重出血的急性白血病患者最危险的症状是（）。
A.头痛、呕吐
B.眩晕、耳鸣
C.突然腹痛
D.视力减退
E.肉眼血尿
参考答案：A
根据句意及汉语提示，在下列各句空缺处写出各单词的正确形式。
1. There are different ______________ (兴趣小组) in our school.
2. My cousin wants to play in the ______________ (下一个的) World Cup.
3. Simon sometimes has lunch in a ______________ (饭店)?
4. Would you like to go ______________ (跑步) with me?
5. Can you find that ______________ (运动员) bag?
设计合同采用定金担保，发包人应在合同签字后( )日内支付定金，设计人收到定金标志着设计开工。
A．1B．3C．7D．14
