—Where the computer?
— on the teacher's desk.
A： is; Its
B：are; They are
C： is; It's
D：are; It is
下列物质久置于敞口容器中，不易变质的是（ ）
“一骑红尘妃子笑，无人知是荔枝来”。荔枝曾经是一种很奢侈的水果，现在却进入寻常百姓家。这说明（ ）
