A. 顺序结构
B. 条件结构和循环结构
C. 顺序结构和条件结构
D. 没有任何结构
A. INCLUDEPICTURE \d "https://p.ananas.chaoxing.com/star3/origin/08dba66232d751ad814a940634adf071.png" \* MERGEFORMATINET
B. INCLUDEPICTURE \d "https://p.ananas.chaoxing.com/star3/origin/22f7f2467b301d1b86e11ba053cc6c88.png" \* MERGEFORMATINET
C. INCLUDEPICTURE \d "https://p.ananas.chaoxing.com/star3/origin/acf8af233ff31cbf149e07040894deae.png" \* MERGEFORMATINET
D. INCLUDEPICTURE \d "https://p.ananas.chaoxing.com/star3/origin/413915a7ff07be914f66fe2c26bdc200.png" \* MERGEFORMATINET
A. INCLUDEPICTURE \d "https://p.ananas.chaoxing.com/star3/origin/25940044c519ca9424762cf1dcd641f4.png" \* MERGEFORMATINET
B. INCLUDEPICTURE \d "https://p.ananas.chaoxing.com/star3/origin/c851e62c6efb84346fa3b8eb559eb305.png" \* MERGEFORMATINET
C. INCLUDEPICTURE \d "https://p.ananas.chaoxing.com/star3/origin/c7da3295dfca86efa5d5a91715d20ee8.png" \* MERGEFORMATINET
D. INCLUDEPICTURE \d "https://p.ananas.chaoxing.com/star3/origin/6edb0e5171891a2cea8111d1d377d535.png" \* MERGEFORMATINET