[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"exercise-C2-1451":3},{"preview":4,"open":14,"missing":37},{"id":5,"number":6,"total":7,"level":8,"course":9,"activity":10,"discriminator":11,"title":12,"slug":13,"instructions":14,"excerpt":15,"prompts":16,"lock":19,"access":20,"updated":21,"previous_id":22,"next_id":23,"previous":24,"next":28,"first":32},1451,19,81,"C2","reading","long_text","reading_long_text","The Immune System","the-immune-system",null,"From the point of view of an immunologist, the body can be considered as a large community of cells all working together to keep the system functioning. Some cells have jobs that keep them in the same place all the time; nerve cells, for instance. Other cells, such as blood cells, are constantly on the move, carrying…",[17,18],"What metaphor is used for the human body in the passage?","Which way to become infected is not mentioned?","login","pro","2026-10-02T14:14:49",1450,1452,{"id":22,"number":25,"title":26,"slug":27},18,"Writing about sports","writing-about-sports",{"id":23,"number":29,"title":30,"slug":31},20,"An Unlikely Muse","an-unlikely-muse",{"id":33,"number":34,"title":35,"slug":36},1433,1,"The Marquis's Tale","the-marquis-s-tale",false]