【单选题】Which sentence below best expresses the essential information in the highlighted sentence in paragraph 1? Incorrect choices change the meaning in important ways or leave out essential information.
A.
Every science has a unique set of systems with characteristics and relationships that do not exist in any other science.
B.
The subject matter of systems is the same for all sciences, but the structure of system relationships can vary.
C.
System components and relationships differ for each science, yet systems in all sciences share similar properties.
D.
It is difficult to distinguish one system from another because all systems in all sciences have similar characteristics.
【单选题】Jan is a security officer. Jan believes that it is important to know exactly who is in the office at any given time. She notices that some employees do not sign out of the office when they take lunch,...
A.
Jan believes that it is important that she know exactly who is in the office at any given time.
B.
Jan notices that some employees do not sign out of the office when they take lunch.
C.
Jan finds it impossible to keep track of who is actually in the office.
D.
Jan becomes frustrated with those employees who do not sign out of the office.
E.
Jan notes which employees leave the office without signing out, and reports them to their supervisors.
【简答题】British agers can leave school at six after taking their GCSE exams. They study for exams in as many as ten subjects, s 小题1: they have to work pretty hard! Today’s s spend more time doing ...
【简答题】In order to safeguard(保证)the education of all Hope Chinese Scholl(HCS)students and the normal running of the school, the following rules should be followed: ★ Be quiet in classroom and hallways. Do no...