5--all of the other sentences are details relating to this main point.
Answer:
I believe the best answer to be letter C. New screening techniques are being developed to combat computer viruses. These techniques are the subject of a new research effort at Big State University.
Explanation:
We can readily eliminate letter B due to the inappropriate use of "nevertheless" - we do not have contrasting ideas that would justify its use.
Being left with letters A, C, and D, we can notice that letters A and D are quite ambiguous. They both use third-person plural pronouns, "they" and "them" respectively, to substitute a noun previously used. However, it is not clear if those pronouns refer to the plural noun "techniques" or to the plural noun "viruses". <u>That is why letter C is the best option. The writer made a point of clarifying that he/she is talking about the techniques, not the viruses. Therefore, I believe the correct option to be letter C. New screening techniques are being developed to combat computer viruses. These techniques are the subject of a new research effort at Big State University.</u>
The ball rolled the base
The ball passed the base
(bold is the right answer)
Hope i could help!
Answer:
Rita has a cold.
Are you enjoying this film?
These roses have a nice scent
We don't know where Sheila has gone.
He weighs a hundred kilograms.
Those jeans look nice on you.
Axel doesn't understand English.
He comes from Germany.
Oh no! I think the milk has boiled over.
Explanation:
The simple present tense is used when an action is happening at the time being or at a regular rate. For example, in the first sentence above, the correct form of the sentence is the present tense because the action is happening currently.
The present continuous tense indicates that the action is occurring presently, at a regular rate and will continue right into the future. The present participle of the main verb which ends with -ing is used. The second sentence is indicative of a present continuous tense because the action is in progress and will continue happening after the statement is made.
