Scientists ______ thousands of chemicals before they decided on the right one in the end.
| A．tried out | B．found out |
| C．worked out | D．turned out |
I was scared ___ when I saw the tiger jumped out of the cage and ran to the little child.
| A．to the death | B．of death | C．into the death | D．to death |
_______ you keep on practicing English, I’m sure you will be able to speak it fluently.
| A．As soon as | B．As long as | C．Even if | D．As if |
She heard a scream, _______ brought her heart into his mouth.
| A．it | B．this | C．that | D．which |
— I am gaining weight. I need to see a doctor.
— But I think you eat too much. __________.
| A．Neglect(忽视) of health is doctor’s wealth |
| B．Laugh at your ills, and save doctors’ bills |
| C．Diet cures more than the doctor |
| D．An apple a day keeps the doctor away |
In the past ten years, the ________mountain climber _________ a lot from his own adventurous _______
| A．experienced; experienced; experience |
| B．experience; experienced; experiences |
| C．experienced; has experienced; experiences |
| D．experience; has experience; experience |