student的同义词是什么（）

suspend的同义词是什么（）

同义词辨析的一般方法是什么？

请帮忙给出正确答案和分析，谢谢！

你认为学习本课程最大的障碍是什么（）

类Teacher和Student是类Person的子类：Person p;Teacher t;Student s;//p,t ,s 都不为空if（t instanceof Person） {s=（Student）t;}下列说法错误的是（）

类Teacher和Student都是类Person的子类，进行如下声明：Person p;Teachert;Student s;p，t和s都是非空值if(t instanceof Person){s=(Student)t;}这个语句产生的结果是：()。

关于一般过去时，下列哪个句子是正确的（）

Time spent in a bookshop can be enjoyable. If you go to a __21__ shop, no assistant will come near to you and say, "Can I help you？" You needn't buy anything you don't want. You may try to find out __22__ the book you want is. But if you fail, the assistant will lead you there and then he will go away. It seems that he is not interested in selling any book at all.
There is a story which tells us about a good shop. A medical student __23__ a very useful book in the shop, but it was too expensive for him to buy. He couldn't get it from the library, either. So every afternoon, he went there to read __24__ at a time. One day, however, he couldn't find the book from its usual place and was leaving when he saw an assistant signing to him. To his surprise, the assistant pointed to the book __25__, "I put it there so as not to be sold out," said the assistant. Then he left the student to go on with his reading.
21)、
A.found
B.in a corner
C.where
D.good
E.a little
22)、
A.found
B.in a corner
C.where
D.good
E.a little
23)、
A.found
B.in a corner
C.where
D.good
E.a little
24)、
A.found
B.in a corner
C.where
D.good
E.a little
25)、
A.found
B.in a corner
C.where
D.good
E.a little

Distance learning is a program that allows students to take classes online. Online classes offer on-campus classes, with the convenience of working at home, and the flexibility of creating your own schedule. Anna attends her online class in her pajamas. She gets away with it because her classroom is in her home. Anna is a full-time student learning from distance, and full time mother. She likes the online option because of its flexibility. “I don’t have to sit in class with my two little ones in day care. Instead, I can jump online anytime I like during the day,” said Anna who is preparing for a nursing degree. “What I liked most was the fact that I didn’t have to travel to another place, and I could work at my own place,” she said in an e-mail. Online students must be organized. Self-discipline and motivation are also important. Diana is a math instructor who has been teaching online classes for five and a half years. She had students who participated from far way. Many are returning students who have been working. They are focused on their goals, and are comfortable working hard. Taking classes online can have some unexpected benefits. For instance, the need to communicate questions by e-mail compels students to become better written communicators. Also, you don’t have to worry about appearance. Michael, a current online student, said in an e-mail, “I can just roll out of bed and not worry about how messy my hair is.” Anna included not having to fight for parking or paying for gas as added tuition fee. Taking classes online does have some drawbacks. Students complain about the difficulties of communicating online. Instructors complain about the students’ ability to use digital media. Online classes can end up taking more time than on-campus versions. “An online student should expect to spend at least 15 hours a week working on their assignments,” said Diana the math teacher. The extra time is needed because students must clearly demonstrate understanding of the material through email and online quizzes.
11.__________is the most important feature of online or distance learning.
A. A hard-working and motivated student
B. Studying online from a computer anywhere
C. A good course book
D. Flexible timetable
12.Distance learning allows Anna __________.
A. to study her favorite subject
B. to understand how to be a full-time mother
C. to become a nurse
D. to work on her study at home while taking care of her children
13.Comparing with the traditional classroom learners, online learners have to be__________.
A. highly motivated
B. disciplined
C. well-organized
D. All of the above
14.In the following statements, which is NOT the advantage of distance learning？
A. You can learn from home, wherever your home is.
B. You don’t need to care about your appearance when attending the class.
C. You can meet and talk to a lot of nice people.
D. You can attend the class anytime of the day, totally depending on your timetable.
15.According to the text, what is the drawback of distance learning？
A. Online classes can sometimes be time-consuming.
B. You cannot wear your favorite clothes to classes.
C. There is no one answering your questions.
D. Distance learning gives you a comfortable place to work in.

请帮忙给出正确答案和分析，谢谢！

Will it matter if you don' t take your breakfast？ Recently a test was given in the United States. Those tests included people of different ages, from 12 to 83. During the experiment, these people were given all kinds of breakfasts, and sometimes they got no breakfast at all. Special tests were set up to see how well their bodies worked when they had eaten a certain kind of breakfast. The results show that if a person eats a proper breakfast, he or she will work with better effect than if he or she has no breakfast. This fact appears to be especially true if a person works with his brains. If a student eats fruit, eggs, bread and milk before going to school, he will learn more quickly and listen with more attention in class. Contrary to what many people believe, if you don't eat breakfast, you will not lose weight. This is because people become so hungry at noon that they eat too much for lunch, and end up gaining weight instead of losing. You will probably lose more weight if you reduce your other meals.
The results of the test show that______.
A．breakfast has great effect on work and studies
B．breakfast has much to do with people's health
C．a person will work better if he has simple breakfast
D．breakfast only affects those who work with their brains

针织T恤衫整烫的目的是什么?

针织T恤衫整烫的目的是什么?