Scientists think they have _____ in their attempt to find the causes of some major dieases.
| A．broken through | B．worked out |
| C．fallen out | D．got round |
his idea was accepted by all the people at the meeting.
| A．Strange as might it sound | B．As it might sound strange |
| C．As strange it might sound | D．Strange as it might sound |
By the 2030s most people can to live at least 80, which is a big leap for mankind.
| A．expect | B．desire | C．want | D．demand |
Without enough evidence, the jury couldn’t find him of the crime ,so he was set free.
| A．skeptical | B．ashamed | C．guilty | D．innocent |
- Hi, Maria! I got the first place in the exam.
-! Everyone knows you cheated.
| A．Congratulations | B．Come on | C．Good luck | D．Cheer up |
Help others whenever you can you’ll earn respect from others without difficulty.
| A．and | B．or | C．unless | D．but |