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Colin and Kevin are good friends. Colin's birthday is on October 5th. Kevin's birthday is on November 8th. They both like to swim. They often swim together in summer. They have some habits. Colin often does his homework first at home and washes his hands before each meal. Everyone likes him. But Kevin gets up late in the morning and talks loudly in class. Sometimes he tells lies. They are bad habits. So he should keep good habits.
1．Colin's birthday is in November.2．Colin and Kevin often go swimming in summer.
3．Kevin often washes his hands before meals.
4．Everyone likes Colin. Because he has good habits.
5．Kevin should keep good habits.
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
