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As a saying goes, “A friend in need is a friend indeed.” Friendship is one of the best things in our life. A true friend is 1． by our side and gives us his or her help and comfort when we 2． them.
It’s not easy for everyone to make a true friend in the daily life. Be 3． to choose a friend. We should choose someone 4． has a good character（性格）. We also should avoid those people who aren’t honest. If you hope that 5． friendship can last for a long time, please choose a good friend at first.
We all know that friendship is very precious（珍贵的）.A true friend can always be 6． and respected. If you tell a friend your 7． , he or she won’t tell anyone else. Good 8． always help each other when they are in trouble and cheer each other 9． when they are sad. In a word, don’t 10． him or her when you have made a good friend! Let’s value our precious friendship.
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
