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题库 / Prep2007E1-DS-127
On the number line, if the number k is to the left of the number t, is the product kt to the right of t ?
(1) t < 0
(2) k < 1
Statement (1) ALONE is sufficient, but statement (2) alone is not sufficient.
Statement (2) ALONE is sufficient, but statement (1) alone is not sufficient.
BOTH statements TOGETHER are sufficient, but NEITHER statement ALONE is sufficient.
EACH statement ALONE is sufficient.
Statements (1) and (2) TOGETHER are NOT sufficient.
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已知 k＜t，求 t (k-1)＞0，1) k＜t＜0，-*-=+，2）k＜t，k＜1，NS，易错选C
(2) t=0, kt=t
求讲解