水晶笔的构造可分为：（）、笔箍、笔杆，这几个部分。
A.笔尖
B.笔套
C.笔身
D.笔根
参考答案：A, C, D
Steve Jobs once said: “I’m convinced that the only thing _______ kept me going was _______ I loved what I did.”
A．which; that
B．that; what
C．that; that
D．which; what
流行性脑脊髓膜炎抗菌治疗，应首选的药物是
A．育霉素GB．红霉素C．氯霉素D．诺氟沙星E．林可霉素
