1 . —How many Chinese poems did you learn by heart last term?   
—Twenty, most of them were written in the Tang Dynasty.

A．study

B．remember

C．research

D．survey

2 . Lin Wei has done some ________ to find out the cheapest way of traveling around the world.

A．chores

B．information

C．beauty

D．research

3 . The scientist’s new book is the result of five years of _________(研究) and another two years of writing.

4 . — The world has been changing fast after the ________ of the computer and the smartphone.
— I can't agree more.

A．discovery

B．invention

C．creation

D．research

5 . —The scientists have found a lot of new evidence of the black hole.
—But not everyone agrees with the results of the               .

A．notice

B．message

C．research

D．information

6 . There was a road ________, and the traffic was very heavy.

A．accident

B．symbol

C．research

D．exhibition

7 . —Good news! We can take high-speed trains from Yangzhou to Shanghai next year.
—We will have a new________ for holidays by then.

A．charm

B．choice

C．practise

D．research

8 . The driver was badly hurt and he needed_________ at once.

A．a research	B．an operation
C．an experiment	D．a survey

9 . —Will you keep these old toys?
—Of course. They hold the sweetest ________ about my childhood.

A．gold

B．silence

C．research

D．memory