关于黄体功能不足，卵泡期过长者的诊疗正确的是（）

A.可用促排卵药克罗米酚

B.用安宫黄体酮替代

C.诊刮应在经前期第5天

D.基础体温单向

E.以上都不是

In the following essay, each blank has four choices. Choose the most suitable one from the four choices and write down in the answer sheet.
The key to SNMP (76) is its simplicity. It has a small command set that does a good job of collecting information from (77) any network device. In a SNMP environment, (78) of the work is handled by the network management system. Devices that are being managed are not (79) with processing (80) that might affect their performance.

A．most

B．many

C．much

D．a lot