It’s not easy for the expert to ______ pig flu. in humans from regular human seasonal influenza.
| A．distinguish | B．separate | C．identify | D．recognize |
When the spaceship traveled above，______new looking earth appeared before us，______earth that we had never seen before.
| A．a；the | B．the；an | C．/；the | D．a；an |
Don’t reply to any e-mails _______ personal information, no matter how official or formal they appear.
| A．searching | B．asking | C．offering | D．requesting |
–Why has Tom looked unhappy recently?
–He has some difficulty ______ with his new classmates at school.
| A．getting over | B．getting in | C．getting along | D．getting down |
As a scientist, Madam Curie devoted herself ________ to her research and that was why she was given two Nobel Prizes.
| A．strongly | B．entirely | C．extremely | D．gradually |
She __________ the new laptop which she bought for her brother on the table and went out for supper.
| A．set out | B．set up | C．set down | D．set off |