She intended to dress up as a ghost and as she had made her costume the night before.请问句子中第二个as是表示原因吗? 它在这里能否和since或for互换着用?另外问一下老师,dress up as中的up能省略吗?
Can our planet afford to have any great thinkers
become discouraged and give up? It doesn’t take a genius to know the answer: absolutely
not.上面一段摘自2021年高考的全国甲卷(全国2卷)的阅读理解D。这里的动词 become 的主语呢?感觉句子结构不完整吧!