题目1A. <img src="https://tihai-oss-cloud.itihey.com/img/9b47fa5f65cfd4227e423406c93b44fa.png">B. <img src="https://tihai-oss-cloud.itihey.com/img/c402bcf2cfbaa2069eb34d8ab6e0a425.png">C. <img src="https://tihai-oss-cloud.itihey.com/img/4b855c81373162939291b07d5d82263c.png">D. <img src="https://tihai-oss-cloud.itihey.com/img/23c0951e0047c7db56eea83f5897c4bb.png">