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| A. Asia B. born C. from D. less E. His F. five G. hero H. decision I. because J. fifteen K. as L. Although |
Everyone has a hero in his heart. The 1． in my heart is Yuan Longping, who is a great Chinese scientist. He is known 2． “Father of Hybrid Rice（杂交水稻之父）”.
Yuan Longping was 3． on September 7th, 1930. He studied very hard when he was young. After graduating 4． college in 1953, he became a teacher in an agriculture（农业）school. In 1960, Yuan Longping saw many people die of hunger, so he made a 5． to do some research into a new kind of rice-hybrid rice. After 6． years of hard work, Yuan Longping with his students made a great wonder in 1975-feeding nearly 20% of the world’s population with 7． than 9% of the world’s farmland. So far, over 100 countries in 8．, Africa and America have grown hybrid rice.
Many people look up to Yuan Longping because he spent all his life working for people on the earth.9． he has been dead, we will never forget him. 10． spirit always encourages us to try our best to serve our motherland. There is no doubt that Yuan Longping is a great hero.
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
