Charles Babbage is generally considered______-the first computer.
| A．to invent | B．inventing | C．to have invented | D．having invented |
________ walk is expected to last all day, so bring ________ packed lunch.
| A．A; a | B．The; / |
| C．The; a | D．A; / |
In recent years, many mainland residents have rushed to Hong Kong to buy baby milk powder due to their ________ about its quality.
| A．anxiety | B．curiosity |
| C．generosity | D．attention |
One hundred thousand years ago, ________ choice was simple when it came to ________ drink—there was no choice. It was water or nothing.
| A．the；a | B．a；不填 |
| C．the；不填 | D．a；the |
Liu Yang is ________ first woman astronaut in China who reached ________ space.
| A．不填；the | B．the；不填 |
| C．the；the | D．a；a |
According to ________ People's Daily article, 40% of the lakes in Jiangsu have dried up in ________ past 30 years.
| A．the；a | B．不填；the |
| C．a；the | D．不填；a |