This is 3-D printer. And this is an artificial (人工的) ear. Can you believe that scientists printed this artificial ear by this 3-D printer?
| A．a | B．an | C．the | D．/ |
More sheep by the farmer since two months ago.
| A．was sold | B．were sold |
| C．has been sold | D．have been sold |
young trees have been planted along the north of China these years.
| A．Million of | B．Millions of |
| C．Several millions | D．Millions |
The final exam is coming. All the students are busy getting readyit.
| A．to | B．at | C．for | D．with |
——Hi, David. How’s it going?
——_______. I can’t find my new bike.
| A．Not bad | B．Great |
| C．Terrible | D．I’m OK. |
——Does your mother have long hair?
——No, she has _____hair.
| A．curly short | B．long curly |
| C．short curly | D．curly long |