表示
The new drug will not be put on the market _____ it has proved safe on humans.
The new drug will not be put on the market \_\_\_\__ it has proved safe on humans.
_____ today, he would get there by Friday.
\_\_\_\__ today, he would get there by Friday.
李某长期从事茶叶加工出售，为增加销量，他委托加工厂在包装袋上印上“绿色环保”“高级饮品”等字样，并且将产地改为某省一著名茶乡。对李某这一行为，下列说法正确的是（ ）。
李某长期从事茶叶加工出售，为增加销量，他委托加工厂在包装袋上印上“绿色环保”“高级饮品”等字样，并且将产地改为某省一著名茶乡。对李某这一行为，下列说法正确的是（ ）。
稀疏矩阵的压缩存储可以用一个三元组表来表示稀疏矩阵中的非0元素。（ ）
稀疏矩阵的压缩存储可以用一个三元组表来表示稀疏矩阵中的非0元素。（ ）A
—I heard they went skiing in the mountains last winter.—It _____ true because there was little snow there.
—I heard they went skiing in the mountains last winter.—It \_\_\_\__ true because there was little snow there.