Which of the following in NOT true of the nuclear envelope? () A: The nuclear envelope is exactly like other cellular membranes. B: The nuclear envelope separates the genetic material from the cytoplasm. C: The nuclear envelope is a pair of concentric membranes. D: The nuclear envelope is studded with pores.

If you receive an invitation card together with a R.S.V.P. card, you can just fill in the response card and return in the _______ envelope._

Which of the following statements are correct concerning addresses on the envelope? A: In English, on the envelope the writer’s address, also called “the return address”. B: In English, on the envelope the writer’s address comes before the receiver’s address and name. C: In English, on the envelope the writer’s address comes after the receiver’s address and name. D: In Chinese, on the envelope the address and name of the receiver is above the writer’s address.

The () stuck on the envelope says “By Air”.

Address an Envelope for the above Letter.

Where should a stamp be placed on the envelope?

What does “c/o”on the envelope stand for?

After closing the envelope, the secretary ______ the stamps on firmly.

___________ you write your return address on the envelope?

The writer is the owner of Mackay Envelope Corporation, a manufacturing company.