在之前的30年里,我不曾想过我年仅6岁的孩子,会为了照顾我的感受紧张得束手无策.这句话的表达妙处

in the former days.
祝你进步！

A,printf函数调用时必须提供第一个参数,即格式控制符部分.可以在这一部分中包含原样输出的内容
B,正确
C,通过printf()函数的%x和%o以及%p格式控制符,可以以16进制或者8进制输出,但是没有直接输出二进制的格式控制符或者标准库函数,要自己编写输出二进制的程序.
D,不正确,从键盘上输入的数字也会被getchar()函数当作字符读取,而且getchar()每次只只读一个字符.

in the paragraphs mentioned before

I can't figure out where I was in the previous work, so I decided to make a change. I'm interested in lots of things, though know them only a little. I am easy to get along with and wish to be your friends.

My email has some problem, have you received the message below?

希望对你有帮助.

根据你的要求改过了.

对的呀.是用had done

原有一毫升生理盐水 之后加入9毫升蒸馏水 此时生理盐水的浓度是原来的1/10.再加入90毫升蒸馏水可已得到是一开始（一毫升蒸馏水）的一百分之一.

I had refered to it in the former mail .The shipments you require from July to August is too large.To finish the ariginal plan is already very difficult.So I can't do anymore .I have changed the delivery plan in the form.Please pay attention to the red words.If you must require me to make some additional products,I think I can't do it now.人手翻译,

供参考
He is the founder of the undergraduate course I had/have taken and the program
leader;...;
The professor has indicated to me that he would like to have a reference
letter of me from one of my former instructors who must enjoy a reputation
for academic prestige。
注
这里的处理
首句的 he 及次句的 the professor 可以指不同的两人
academic (学术上) 这个字在原文中没有
乃按语境自行加上
这可能是重要的通讯
若有疑问
可在提出

如果造成质壁分离的离子能被植物细胞吸收并且浓度不足以杀死细胞,就可以

在之前的还盘中已经确认过了Have confirmed at the process of returing discs.