To round is to delete or (66) one or more of the least significant digits in a positional (67) and to, or not to, adjust the part retained in accordance with some specified rule. The purpose of rounding is usually to limit the (68) of the numeral or to reduce the number of characters in the numeral, or to do both these things.

The most common arithmetic forms of rounding are rounding down, rounding up and rounding off. Rounding down is defined as making no adjustment to the part of the numeral that is retained. Rounding up means adjusting the part of the numeral that is retained by adding 1 to the least significant of its digits and executing any necessary carries, if and only if One or more non-zero digits have been deleted. Rounding off (69) adjusting the part of the numeral retained by adding 1 to the least significant of its digits and executing any necessary carries, if and only if the most significant of the digits deleted was equal to or greater than half the (70) of its digit place.

（67）处填（）。

A．rendering

B．viewing

C．expression

D．representation

在和日本人的一次商务谈判中，你已经问过对方是否愿意加入一条款，他们回答“是的”，所以你把那一条款写入了合同。可事后你发现日本人对所加的条款非常不高兴，原因是：（）。

A.“是的”有时可以理解为“也许”，这个例子中的日本人只是想再考虑一下

B.日本人很少直接说“不”字，有时候，即使他们不同意什么事情时，他们也说“是”，生怕让对方感到尴尬

C.日本人认为你知道他们不希望加入这一条款

D.日本人的“是的”是指“你是对的，我们不同意这一条款”