-Was it between 1920 and 1930___ the television was invented in America?-Exactly.A.\x05whichB.\x05whenC.\x05sinceD.\x05that为什么选择that啊,强调句是怎么回事儿啊

-Was it between 1920 and 1930___ the television was invented in America?-Exactly.A.\x05whichB.\x05whenC.\x05sinceD.\x05that为什么选择that啊,强调句是怎么回事儿啊
-Was it between 1920 and 1930___ the television was invented in America?-Exactly.
A.\x05which
B.\x05when
C.\x05since
D.\x05that
为什么选择that啊,强调句是怎么回事儿啊

-Was it between 1920 and 1930___ the television was invented in America?-Exactly.A.\x05whichB.\x05whenC.\x05sinceD.\x05that为什么选择that啊,强调句是怎么回事儿啊
强调句就是专门对某词或某句话进行强调,起到加强语气或突出重点的作用,
该题是强调句的疑问句形式,意为电视是在1920到1930年间发明的吗,主要强调时间,如改成陈述句语气,就是it was between1920 and 1930 that the television was invented in America.that和谓语之间的部分即为强调部分,强调时间指是在1920到1930年间（而不是其他年份）发明了电视
比如说某句非强调句,I met him yesterday in the restaurant.我昨天在饭馆里看到了他
若强调时间,It was yesterday that i met him in the restaurant.我是在昨天（而不是其他日子）在饭馆见到他的(那是在昨天,我在饭馆遇到了他）
若强调地点,It was in the restaurant that i met him yesterday.昨天我是在饭馆（而不是其他地方）遇到他的（那是在饭馆里,昨天我碰到的他）
若强调人,It was him that i met in the restaurant yesterday.我昨天在饭馆遇到的是他（而不是别人）
强调句的基本形式是It is(was) that 被强调部分 that 其他部分