Knowing only one language is a big disadvantage in cross-cultural communication and career advance——青夏教育精英家教网——

5. Knowing only one language (English) is a big disadvantage in cross-cultural communication and career advancement.

题号：06

1. A 2. C 3. E 4. B

英语

题号：05

（2）

（1）

当且仅当时取等号

题号：04

“矩阵与变化和坐标系与参数方程”模块（10分）

（2）

当且仅当时取等号

0 45722 45730 45736 45740 45746 45748 45752 45758 45760 45766 45772 45776 45778 45782 45788 45790 45796 45800 45802 45806 45808 45812 45814 45816 45817 45818 45820 45821 45822 45824 45826 45830 45832 45836 45838 45842 45848 45850 45856 45860 45862 45866 45872 45878 45880 45886 45890 45892 45898 45902 45908 45916 447090