题目内容
A new kind of drug ___ ___ to cure H7N9 bird flu by the scientists and they are hopeful that they will succeed in a couple of weeks.
| A．has been developed | B．is being developed | C．is developing | D．has developed |
B
解析试题分析：句意：一种新的药物正在被科学家开发来治疗H7N9禽流感，他们希望他们会在几个星期后成功。从they are hopeful that they will succeed in a couple of weeks. 可知是正在开发，而且drug和develop是被被动关系，选B。
考点：考查时态语态
同步练习强化拓展系列答案It was the third time that I ________ of the changes of the timetable.
| A．had informed | B．have informed |
| C．had been informed | D．have been informed |
Sorry to have kept you waiting. You must have thought ___.
| A．we are not coming | B．we were not coming |
| C．we did not come | D．we were not come |
It every day so far this month. I can't tell you if it tomorrow.
| A．rained; rains | B．is raining; shall rain |
| C．has been raining; rains | D．has rained; will rain |
Laughter, along with an active sense of humor, ______ protect you against a heart attack, according to a recent study.
| A．have helped | B．helped | C．help | D．helps |
The meeting began two hours ago and because no decision _______, we will continue our discussion tomorrow.
| A．has made | B．has been made | C．had made | D．had been made |
—Would you please keep silent? The weather report ______ and I want to listen.
| A．is broadcast | B．has been broadcast |
| C．was broadcast | D．is being broadcast |
— Hurry up! Alice and Sue are waiting for you at the school gate.
— Oh! I thought they _____ without me.
| A．had gone | B．are going | C．have gone | D．went |
The moment the 28th Olympic Games _____ open, the whole world cheered.
| A．declared | B．have been declared |
| C．have declared | D．were declared |