Everyone needs to eat. But what happens if there is not enough (足够的) food? Jimmy Brown is only in Grade 4, but he worries about it.
Jimmy’s dad told him about a great Chinese scientist (科学家) named Yuan Longping.
“When he was young, Mr Yuan saw that people were hungry, ” said Jimmy’s dad. “He wanted to help. So he worked hard all his life. ”
Mr Yuan found a way to get rice plants to grow much more rice. Now, China can feed lots and lots of people with this special rice.
“So, if you really want to do something, you can. Just like Mr Yuan, ” said Jimmy’s dad.
Jimmy was happy. When he grows up, he will do something to help feed the people, too.
1.Jimmy is only 4 years old.2.Jimmy worries that there is not enough food for people.
3.Jimmy knows about Yuan Longping from a book.
4.China can feed lots and lots of people because of Mr Yuan’s work.
5.Jimmy was happy because he learnt something from Mr Yuan’s story.
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