下列说法正确的是( ) A.人的性染色体只存在于精子和卵细胞中 B.人的精子的染色体组成是22条+XY C.人的卵细胞的染色体组成是22条+XX D.人的性别在形成受精卵的时候就决定了 答案:DThere is a big shop near my home. There are many different things in 1 It also sells the things for sports. Many people 2 shopping in the shop every day. They are 3 and old,women and men.It’s Sunday afternoon. My mother and 4 are in the shop. Mother wants to get (买) some food for 5 . She gets some meat,fish and 30 eggs. They all look fresh (新鲜的) but they are not very 6 . I want a 7 bats and a baseball. The people in the 8 are very friendly.The shop 9 early in the morning and closes late in the evening. People can get things after 10 .( ) 1. A. its B. them C. it D. there( ) 2. A. go B. do C. get D. come( ) 3. A. new B. young C. nice D. broken( ) 4. A. I B. my C. mine D. me( ) 5. A. breakfast B. supper C. herself D. eat( ) 6. A. good B. enough C. dear D. many( ) 7. A. of B. set of C. set D. for( ) 8. A. library B. school C. home D. shop( ) 9. A. open B. opening C. opens D. opened( ) 10. A. job B. work C. school D. class