单项选择 适中0.65 引用5 组卷2443
Yuan Longping was a world-famous scientist. Because of his achievements, rice ________ has been increased greatly.
| A．population | B．contribution | C．production | D．introduction |
2021·江苏南京·中考真题
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Qian Xuesen made a unique ________ to China’s space technology programme.
| A．religion | B．contribution | C．exploration | D．mission |
Though Zhong Nanshan is in his 80s, he makes a great ________ to the medical development.
| A．celebration | B．contribution | C．conversation | D．collection |
—I really admire these scientists in different fields in our country.
—I agree. They have made a great ________ to our country, even to the world.
—I agree. They have made a great ________ to our country, even to the world.
| A．celebration | B．conversation | C．contribution | D．introduction |
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