According to scientists, our mental abilities begin to from the age of 27 after reaching the highest level at 22.
A．differ B．increase C．develop D．decline
If not tired from work, I will spend some time in my study every evening.
A．locking B．locked
C．having locked D．being locked
The research lacks evidence, and therefore, its conclusions are doubtful.
A．solid B．fierce C．severe D．potential
The furniture, with its modern style and bright colors, suits modern house and their gardens, but looks in the garden of a traditional home.
A．out of question B．out of date
C．out of sight D．out of place
—Can I help you with it?
—I appreciate your , but I can manage it myself.
A．offer B．advice C．question D．idea
On the right on TV____, the China’s first female astronaut who had been sent up into space on June 29,2012.
A．did Liu Yang sit B．sat Liu Yang
C．was Liu Yang seated D．seated Liu Yang
